The last time I looked Google displayed as many characters as it can fit into a block element that’s about 600px wide and doesn’t exceed 1 line of text (on desktop). So – THERE IS NO BEST PRACTICE AMOUNT OF CHARACTERS any SEO could lay down as exact best practice to GUARANTEE a title will display, in full in Google, at least, as the search snippet title, on every device. Ultimately – only the characters and words you use will determine if your entire page title will be seen in a Google search snippet.
QUOTE: “While, as a whole, web usability has improved over these past several years, history repeats and designers make the same mistakes over and over again. Designers and marketers continuously need to walk a line between providing a good user experience and increasing advertising revenue. There is no “correct” answer or golden format for designers to use in order to flawlessly reach audiences; there will inevitably always be resistance to change and a desire for convention and predictability. That said, if, over the course of over ten years, users are still lamenting about the same problems, it’s time we start to take them seriously.”  Therese Fessenden, Nielsen Norman Group 2017

Google is falling into a familiar pattern. First, they offer web publishers increased visibility and SERP display options. Next, they incent participation in specific formats and data structures. Finally, they take that data for themselves, changing the SERPs to favor advertising, their own properties, and/or instant answers that can reduce publisher traffic. For web marketers, it's a prisoner's dilemma. In this presentation, Rand will show data on how Google is being used today, how it's changing, then dive into strategic initiatives and specific examples of how savvy players can build a moat to protect against long-term risk.
Google states, “News articles, Wikipedia articles, blog posts, magazine articles, forum discussions, and ratings from independent organizations can all be sources of reputation information” but they also state specifically boasts about a lot of internet traffic, for example, should not influence the quality rating of a web page. What should influence the reputation of a page is WHO has shared it on social media etc. rather than just raw numbers of shares. CONSIDER CREATING A PAGE with nofollow links to good reviews on other websites as proof of excellence.
QUOTE: “We do use it for ranking, but it’s not the most critical part of a page. So it’s not worthwhile filling it with keywords to hope that it works that way. In general, we try to recognise when a title tag is stuffed with keywords because that’s also a bad user experience for users in the search results. If they’re looking to understand what these pages are about and they just see a jumble of keywords, then that doesn’t really help.” John Mueller, Google 2016
This helpful tool scans your backlink profile and turns up a list of contact information for the links and domains you'll need to reach out to for removal. Alternatively, the tool also allows you to export the list if you wish to disavow them using Google's tool. (Essentially, this tool tells Google not to take these links into account when crawling your site.)
QUOTE: “What happens when you have a page with “ten PageRank points” and ten outgoing links, and five of those links are nofollowed? Let’s leave aside the decay factor to focus on the core part of the question. Originally, the five links without nofollow would have flowed two points of PageRank each (in essence, the nofollowed links didn’t count toward the denominator when dividing PageRank by the outdegree of the page). More than a year ago, Google changed how the PageRank flows so that the five links without nofollow would flow one point of PageRank each.” Matt Cutts, Google 2009
Users will occasionally come to a page that doesn't exist on your site, either by following a broken link or typing in the wrong URL. Having a custom 404 page30 that kindly guides users back to a working page on your site can greatly improve a user's experience. Your 404 page should probably have a link back to your root page and could also provide links to popular or related content on your site. You can use Google Search Console to find the sources of URLs causing "not found" errors31.
Online reviews have become one of the most important components in purchasing decisions by consumers in North America. According to a survey conducted by Dimensional Research which included over 1000 participants, 90% of respondents said that positive online reviews influenced their buying decisions and 94% will use a business with at least four stars. Interestingly, negative reviews typically came from online review sites whereas Facebook was the main source of positive reviews. Forrester Research predicts that by 2020, 42% of in-store sales will be from customers who are influenced by web product research.
Google asks quality raters to investigate your reputation by searching “giving the example [“ibm.com” reviews –site:ibm.com]: A search on Google for reviews of “ibm.com” which excludes pages on ibm.com.” – So I would do that search yourself and judge for yourself what your reputation is. Very low ratings on independent websites could play a factor in where you rank in the future – ” with Google stating clearly “very low ratings on the BBB site to be evidence for a negative reputation“. Other sites mentioned to review your business include YELP and Amazon. Often – using rich snippets containing schema.org information – you can get Google to display user ratings in the actual SERPs. I noted you can get ‘stars in SERPs’ within two days after I added the code (March 2014).
And so on and so on. The point of this step isn't to come up with your final list of keyword phrases. You just want to end up with a brain dump of phrases you think potential customers might use to search for content related to that particular topic bucket. We'll narrow the lists down later in the process so you don't have something too unwieldy. Once you have your final list, there are several data-driven tools available to you for finding out which keywords you're most likely to rank well for. 
QUOTE: “What happens when you have a page with “ten PageRank points” and ten outgoing links, and five of those links are nofollowed? Let’s leave aside the decay factor to focus on the core part of the question. Originally, the five links without nofollow would have flowed two points of PageRank each (in essence, the nofollowed links didn’t count toward the denominator when dividing PageRank by the outdegree of the page). More than a year ago, Google changed how the PageRank flows so that the five links without nofollow would flow one point of PageRank each.” Matt Cutts, Google 2009
SEM is better for testing than SEO. Because you can immediately turn SEM paid ads off and on, it’s a great strategy for testing. You can quickly revise your ad copy, target new audiences, and change landing page content to test your new tactics. This flexibility allows you to see differences in your strategies immediately. You cannot accomplish this through SEO, as it would take too much time to make changes and monitor differences in results.
There are plenty of ways to improve your website’s SEO for improved organic digital marketing efforts. Initially, you will want to perform keyword research to learn what phrases your customers are likely to type into search engines like Google. You will then want to create engaging, original content for your various web pages that include these highly-searched keywords. Your website’s efficiency, architecture, and mobile optimization are other factors that are well-known to be critical in search engine optimization. Finally, other more nuanced factors like the regular posting of relevant content, effective metadata, and the correct alt-tags will provide a greater boost to your site’s performance related to SEO.
The transparency you provide on your website in text and links about who you are, what you do, and how you’re rated on the web or as a business is one way that Google could use (algorithmically and manually) to ‘rate’ your website. Note that Google has a HUGE army of quality raters and at some point they will be on your site if you get a lot of traffic from Google.
QUOTE: “I think there is probably a misunderstanding that there’s this one site-wide number that Google keeps for all websites and that’s not the case.  We look at lots of different factors and there’s not just this one site-wide quality score that we look at. So we try to look at a variety of different signals that come together, some of them are per page, some of them are more per site, but it’s not the case where there’s one number and it comes from these five pages on your website.” John Mueller, Google 2016
While that theory is sound (when focused on a single page, when the intent is to deliver utility content to a Google user) using old school SEO techniques on especially a large site spread out across many pages seems to amplify site quality problems, after recent algorithm changes, and so this type of optimisation without keeping an eye on overall site quality is self-defeating in the long run.
If you want to *ENSURE* your FULL title tag shows in the desktop UK version of Google SERPs, stick to a shorter title of between 55-65 characters but that does not mean your title tag MUST end at 55 characters and remember your mobile visitors see a longer title (in the UK, in January 2018). What you see displayed in SERPs depends on the characters you use. In 2020 – I just expect what Google displays to change – so I don’t obsess about what Google is doing in terms of display. See the tests later on in this article.
Robots.txt is not an appropriate or effective way of blocking sensitive or confidential material. It only instructs well-behaved crawlers that the pages are not for them, but it does not prevent your server from delivering those pages to a browser that requests them. One reason is that search engines could still reference the URLs you block (showing just the URL, no title or snippet) if there happen to be links to those URLs somewhere on the Internet (like referrer logs). Also, non-compliant or rogue search engines that don't acknowledge the Robots Exclusion Standard could disobey the instructions of your robots.txt. Finally, a curious user could examine the directories or subdirectories in your robots.txt file and guess the URL of the content that you don't want seen.
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