One thing that as been changing a lot this last year is the social networks. Lots with new tools to advertise (and new tools to buy too), and another new ones that pay you for being active (just like Bitlanders). 

This brings us much more opportunities and a new way to win some money with our internet and OUR contents. Unfortunaly this brings lots of scams also, some people just thought that is much easier steal someone by creating social networks that promise a lot but don't pay at all.

This evolution also put advertising into another level, just like facebook, on this networks, you can share all kinds of sites where you work to gain more referrals, the good stuff here is that, at the same time that you advertise other sites, you win for being active socialy...so you win twice.

Conclusion: It can be quite interesting to search for some good social nets that pay but try to seek those that have already payment proofs, or people you know that are already there, or even just google and see their reviews.