Social network is the best place to engage with people of different kinds and country. Millions of people addicted to social network to connect with their friends and spouse, really it shrinked the whole world under one roof.
Because of its over crowd it turns out to be the good place to advertise products and business. It is easy to market product in social network because it has capacity to capture variety of audience world wide which is impossible in real world.
Must read – 20 Tips for Effective WEB Marketing.
Here are some popular and best social networking sites which allows you to advertise with them, just give a try. It is slightly different from Google Adwords.
Merits of Advertising on Social Network sites
1. An Ultimate Business tool.
2. Easy to capture huge audience in a short time.
3. An alternative to Google adwords.
4. Earn more profilts.
5. Easy Branding of your products.
6. Very social.
Before checking the list, know how online advertising works, its types, and how to opt out Advertising cookies for better privacy.
1. Advertise on Facebook
Do read – How to Increase Facebook follower Base to your Fanpage 
2. Advertise on Myspace
3. Sponsored Tweets for Twitter
Do check - Free Tactics or Secrets to Increase Twitter followers in a Month.
4. Advertise on Linked IN
5. Advertise on ORKUT
6. Advertise on Hi5
7. Advertise on Tagged
8. Advertise on BeBo
9. Advertise with IbiBo
10. Advertise with Friendster
11. Advertise with Multiply
12. Advertise with Last.Fm
Hi Sudharshan, now-a-days Social Media Marketing is more powerful than SEO and thats the reason people choose to go with Facebook Advertisement instead of the conventional PPC programs. Anyways, thanks for this useful post.
ya Facebook rocking all around….
Its going to be Ultimate Online Marketing tool….
SEO is still a kind of machine, Facebook and other social sites have Humans in them , Who will naturally Gonna visit blogs If they find Interesting Stuff. that what i think.
great research da
i have an account linkedin and other networks dont know the importance,, thanks you have showed the path 
Well Said Sudharsan, Social media ads will be more powerful on ROI than other traditional ads.
The best part about advertising on social networking sites is that it is very targeted. So you know that the clicks you will get will be from the audience you want.
Great post – i like it
very correct, BTW thanks for your likings
great article! I invite you to promote your products and services for FREE at [Link Removed] and join the biggest social shopping guide!
Thanks for the list,
I thought friendster is dead lol..
Never visited friendster since i have FB, but will check it out again soon.
Thanks!
Then, check out the alternatives like facebook, orkut and ibibo