As I was browsing the internet a while back, I came across this good post which features a list of dofollow social networking sites.
So what are social networking sites?
Social networking sites are websites that users can interact with each others. And by joining these communities, you can advertise your blog and get more traffic.
What is dofollow?
Dofollow means that if you put the link of your blog to their website, google and other search engines will then crawl your blog and index it. Thus increasing your search engine ranking and page ranks. If you would know, this blog is a dofollow too.
The post has 80 links to dofollow social networking sites, that means you can get 80 backlinks to increase your search engine rankings!