Free communication on T-Mobile, Skype, Viber, Sprint, ATT

Calls and text free between Nepal and US for T-mobile customers until May 16:
http://newsroom.t-mobile.com/news/nepal.htm

ATT is free also:

http://about.att.com/newsroom/nepal_relief_efforts.html

Sprint:

http://newsroom.sprint.com/news-releases/sprint-waives-customer-fees-for-calls-and-texts-to-nepal.htm

Skype is also free:

Viber:

Googlevoice – now to 1 cent/minute