This is more of a question than a hot deal. I was using Nimbuzz and found a setting labelled SIP. So out of curiosity I searched what this was... to cut a long story short it's a free telephone number pretty much. I then searched to find free SIP providers and stumbled across this one http://www.sipgate.co.uk
Seems like a good deal in theory, however I don't know much about them or how it works if I'm honest, so does anyone know more/use them?