Web 2.0 Backlinks is valuable for website?

Any backlink is valuable in SEO. Web 2.0 backlinks are regarded as quality backlinks. If you doubt, it may take time in getting cached by search engines, then you can make such pages crawled by bookmarking such linking page.

Hope you have considered variety of backlinks rather than only from web 2.0 websites.

Any backlink is valuable in SEO. @binayjha No way

If you want to increase your SEO rankings, Web 2.0 backlinks are very valuable. They allow you to establish a social media presence for your website. Every company should create an official page on social networking sites. This profile should contain relevant information about the company, including a proper URL for the landing page. You can also include links to your business email. These backlinks will help you improve your PageRank authority.

@jaap The intent of the query is category of links. Any type of link is valuable in the SEO effort. For example,

• Links from web 2.0 sites
• Links from directory sites
• Links from classified sites ...the list goes on.

Hope you are not talking about spam links.