It's funny it's advertised free yet most of the time you have to pay unless you're talking to someone who's on the same network as you.
Misleading really and should really say low cost calls.
AS for me it's pretty pointless as I don't do very many calls. Most of them are on my mobile when I'm trying to find which pubs my friends are. The biggest killer is the line rental but if I want broadband I need a BT line.