Rebtel Content Usability
wap.rebtel.com) offers cheap and free international calls between 39 countries using any phone. There are two plans. a free one similar to Talkser (review) in which the called party calls you back while you stay on the line. Unlike Talkster, Rebtel is not ad supported. The other Rebtel plan is like JaJah, you pay a few cents per minute but the call connects directlly without the need for a callback.
Usability 
