Having a different description meta tag for each page helps both users and Google, especially in searches where users may bring up multiple pages on your domain (for example, searches using the site: operator). If your site has thousands or even millions of pages, hand-crafting description meta tags probably isn't feasible. In this case, you could automatically generate description meta tags based on each page's content.
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.
QUOTE: “Well, I think you need to look at the pages in an overall way, you should look at the pages and say, actually we see this a lot in the forums for example, people will say “my text is unique, you can copy and paste it and it’s unique to my website.” But that doesn’t make this website page a high quality page. So things like the overall design, how it comes across, how it looks like an authority, this information that is in general to webpage, to website, that’s things that all come together. But also things like comments where webmasters might say “this is user generated content, I’m not responsible for what people are posting on my website,” John Mueller, Google 2016
QUOTE: “One of the difficulties of running a great website that focuses on UGC is keeping the overall quality upright. Without some level of policing and evaluating the content, most sites are overrun by spam and low-quality content. This is less of a technical issue than a general quality one, and in my opinion, not something that’s limited to Google’s algorithms. If you want to create a fantastic experience for everyone who visits, if you focus on content created by users, then you generally need to provide some guidance towards what you consider to be important (and sometimes, strict control when it comes to those who abuse your house rules). When I look at the great forums & online communities that I frequent, one thing they have in common is that they (be it the owners or the regulars) have high expectations, and are willing to take action & be vocal when new users don’t meet those expectations.” John Mueller, Google 2016
While SEOs can provide clients with valuable services, some unethical SEOs have given the industry a black eye by using overly aggressive marketing efforts and attempting to manipulate search engine results in unfair ways. Practices that violate our guidelines may result in a negative adjustment of your site's presence in Google, or even the removal of your site from our index.