One of the reasons I love VoIP technology is the fact that it allows bloggers to interact with readers, companies and (if you are lucky) conduct phone interviews–without using up any of your minuets.

Although there are many VoIP services out there, the one that I have come to love the most is GrandCentral (a VoIP service owned by Google), as it allows you to embed a button on your blog, giving your readers (and potential advertisers) an extra option to contact you directly without revealing your mobile number (or even theirs, which is great for anonymous tips).

Despite the fact that Google has not (yet) created an iPhone app for GrandCentral, a third party company called GGT Enterprises has developed a free iPhone app called GrandDialer which basically gives iPhone users “unlimited” calling (regardless of their plan)–as long as they live in the US of A (more on that below).

Since GrandDialer (through GrandCentral) may not appeal to many international readers, I have included a brief overview of another iPhone app called Fring below. read more