This was discussed already. But this offer is new for valentines day.
Get $20 Free international calling credit to call from your android or
mobile phones. This is offered by Rebtel, a leading VoIP provider for
international calls. Calls can be made directly from your android phone with
Rebtel android app.
Valentine's Day Gift: Deposit $10 get $30!
Submit voucher code valentinesbonus when you sign up and get an instant $20
bonus on your first $10 deposit. This is a one day offer, valid only on
February 14.
Please note that this offer is valid only on the Valentine's day and is for
the first time paying user. You need to submit a voucher code
valentinesbonus during your sign-up. You will get $30 credit in your account
if you make $10 deposit reducing the international calling rate by one
third.
Click Rebtel: http://www.rebtel.com/en/landing/af/valentines-2012/?utm_source