The only social networks I know are facebook,gplus,youtube,twitter & myspace.. Does anyone knows a newlarge social network to promote your site or business on?
Next one which is also big is linkedin. But you didn't mention what you're trying to achieve so i'm not sure if linkedin which is business network is right for you
Yap LinkedIn is a good one, but its more a personal profile rather than a company one, it has small if none developer tools. Depends what you are looking for!
LinkedIn is a good business social network and you can setup a company profile as well as a personal one. The service is making changes which will allow it to be more competitive with the other major social networks.
It's a broad niche... what really equals "Social Network" - a friend platform - cos Twitter isn't a friend platform, do you mean for followers? How about Zimbio & Tweetmeme and knowyourmeme are also valuable sources - or reddit - these are all growing spam sights. Meme's seem to be all the hype at the moment.
Like most webmasters I try to achieve more traffic to my website via social media. But the social media of now is already so spammed and old, we need new ones.