If you're still talking to people in USA, especially through Skype, your conversations are probably already monitored [1]. I think NSA already has a (secret, illegal) mandate to monitor all American communications with any foreigners.
[1] http://www.theregister.co.uk/2009/02/12/nsa_offers_billions_...
http://www.computerworld.com/s/article/9218002/Microsoft_see...