There are various ad programs with twitter if you are looking for direct return from a site like twitter. You can also incorporate twitter and facebook with your website making profit or directly through surveys, etc. although not many people will want to do those.
I think, facebook, twiiter are the only ones till now, by which we can make some money. Find some useful posts for making money from facebook on google. I am sure you will find something great to implement.
Face book, Twitter are such websites where you can make. But for that one either you have to add Google ad sense or you have to maintain accounts. There can be more ways also. Let me know if you come to know about more.
You could for example try the Twitter In-Stream Advertising "ad.ly". Maybe this is something you are looking for.
Social network sites are more appropriate for promotion, not for making money online. If you are going to make some aetra cash then turn your sight towards affiliate programs - there are plenty of them all over the Internet
Socials are the beast way to sell your services or promote your services or sites. And this is a strat for making money
Hello Dear It will depend on your own creativity, how make money with social networking website. I believed Myspace is best if you use. If you want to know more about, then you can search them by Google. Thanks NG
You can adf.ly to get paid for tweet clicks. Same site that has the same function is revtweet. But I dont highly recommend them. You will earn nothing but cents.
Visit here to know more about how to earn money from social networking sites. http://hubpages.com/hub/Earn-Money-Online-With-Social-Networking-Sites