The reasons companies do this is.
And if you think that only Infosys is doing this Wake up. Each and everyone of the fortune 500 companies with a branch in India has been doing this for over a decade now.
Typically if you have outsources your "Low skill high effort" work you are working with someone from Category 4 & 5 who could not get work in the "High skill" sector.
Civil society in India agitating against corruption in 2011 made use of social networking and SMS's to mobilize large crowd Janlokpal
The party in power has been attacking every communication medium used by the agitators since. Sending of bulk SMS's was prohibited immediately after their agitation in august/Sept SMS. Phone network was down in mumbai during their protest meet in December. Their Facebook page was removed in Sept/Oct.
At a particular time during the August agitation the government was virtually under siege in Dehli with peaceful protesters turning up in front of the parliament and parliamentarian's house in large number. Requiring the government to shut down train stops and bus services to prevent protesters from gathering at the hotspots.
The attack against Facebook, Orkut, SMS etc. is the response of the party in power. They are attacking the communication medium used by protesters under one pretext or other.
Put no trust in cryptic comments.