What works in the Western Countries may not work in India !

Bigadda.com, ibibo.com, fropper, indiarocks, bharatstudent etc. these are the Indian Social networking sites who have destined to Die.The mad rush for creating social networking sites in which almost everyone from big corporates to small to medium internet companies wanted to have their own pie and eventually burned their fingers.
More specifically, the above mentioned websites.

Ask them how much profitable have they been  and the answers will cut a sorry figure which i  bet will not be close to even 1% of what Facebook makes.

Recently, in a communication to its subscribers, BigAdda said no user data would be available after July 15. "We value our association with you. Please download all your personal collection of media files such as photos, videos and audio files from bigadda.com before July 15 as we are scaling down our social networking service. Data will be unavailable after the mentioned date."

The point I am trying drive across is - in the online market domain what worked for the west may not work in India.
These days, the same mad rush is happening in the group buying space. Soon after groupon decided to launch http://www.sosasta.com.  
Almost every other major internet company has decided  to replicate its business model.From rediff to times, to infoedge (naukri.com guys), mouthshut etc... everyone one is jumping into the fray. The big question is how many of them would be able to create a profitable business model out of it?
Most of the times I get messages on my cell for discounts on a useless spa or body massage at a far away place with loads of strings attached.

When the deals are pathetic and the cities covered are limited, then why did these companies bother to jump into it completely unprepared?

Below is the list of companies who are into this crowded business domain :

Snapdeal
Timesdeal
Groupon India - SoSasta
Dealsandyou.com
Mydala.com
Koovs.com
Snatchdeals.com
Lootmore.com
30Sunday.com
Bindasbargain.com
dealface.com
dealhojaye.rediff.com
Dailydeal.in
Dealivore.com
Khojguru.com
Thekha.com
Scoopstr.com
24Hoursloot.com
Masthideals.com

Eager to know your experience  if you have ever used their coupons...