Web2.0 blog is a very important part of SEO. Curating the content, tweaking and embedding links on these web 2.0 blogs or websites which ultimately points to your commercial or targeted page is called web 2.0 backlinks in SEO.
If you somehow managed to get a do follow link from any high authority website then you are all set2.0 does comes under gray-hat SEO tactics. Any of the user of web2.0 websites can create, edit, update the content as they want. It is highly recommended for you to be active on these web 2.0 websites. You can use these sites to promote user engagement and to increase your website ranking on Google. Things to be considered while building web 2.0 backlinks
Web 2.0 has become a next generation web where you can get a subdomain for free and post your content, now you can refer it as the power of SEO. By using the provided Web 2.0 sites List effectively, you can make the most out of it.