Skype
The basic features of
Skype are free; to get credits for free there are survey sites that offer free credits as rewards for completing surveys.
Skype Credit Generators attract a lot of attention but there are strings attached to using them and more often than not they do not work and could result in a
Skype account being canceled. Bing offers free
Skype credits for signing up with their rewards program and using their service.
