I've been given this info from a guy I met in the UK. Allegedly you can use this service to (for example) call the UK from Spain for 2 pence a minute, without the need for a pc or expensive equipment.

easy dial

If any of you do try this and it works please let me know, the guy did seem very genuine. Alternatively if you find it's a con also let inform me - I can contact this guy again.

Good luck!!!