Juvino is a new service aimed at saving mobile users money on international calls (up to 95%), cross network calls (up to 65%) and SMS (up to 50%). It works through free downloadable software which then routes calls/texts off the mobile networks into an alternative IP based network so you save.
A Beta trial of the service has just started in the UK (with some free calling credit). Goto www.juvino.com to get Juvino sent to your phone.
And please do give us your feedback once you have tried it,
Nick (from Juvino)