FreeBuzzer offers free international VOIP Calls

It seems once again the FREE VOIP space is heating up with new free international voip calls providers. With Betamax joining the FREE VOIP movement once again, its even more interesting. VOIPax is a betamax subsidiary(?) has launched FreeBuzzer, a totally free international VOIP calls. FreeBuzzer claims that they offer free international calls to over 40 countries around the world. The best part is it doesn't need a VOIP softphone. Just use it from the web as a Phone to Phone Service. Enter your phone number and enter other party's number and Click Call. FreeBuzzer will call you phone and then connect you to the other party. However I noticed they radomly limit your call limit, probably based on the destination you call. There is a limit per IP. They also ask you to signup for VOIPax :-( I only managed to make a few minutes of calls within Singapore. However when trying later, it throws an error that Free Trial calls are limited. It seems they only allow upto 10-20 minutes of free trial calls in a day.