Looking for a VoIP client to install on a PC that did not have one, I did a quick lookout at what is out there. I used to use heaps of different clients only to move to the next one when I'd notice that the development has stalled and/or that there are new features offered by other clients. I've used XLite, native providers' applications, and lately Linphone. However, I ran into Blink and it is now my VoIP client of choice.
I will be using softphones a bit more, both on the desktop and on the mobile phone, as I have an Australian number with PennyTel and will use it to still "feel at home" when not in Australia. :)