Vopium Blackberry Storm Web
the author of this app says:
Vopium is a free application which enables you to make cheap international calls, SMS, backup your contacts and much more directly from your mobile phone. Download Vopium today; register as a user and save up to 90 % on international calls. You receive 30 free minutes and 30 free international SMS to try out our service. No monthly fee, no call set-up charges or hidden fees. Only pay for the minutes you talk.