PrankDial has great ways to prank call people online for free. You can change the caller id, record calls (so you can hear the reaction), all for free!
There's enough social networking sites out there for humans. This one is strictly designed for dogs! Yes, you read it correctly - for dogs :) And dogs can have their own blogs set up there as well.
Upload your own prank call or choose one from the Funkychart and send it to your friends - for free!
FunkyCall is a mobile entertainment community portal that enables cell phone users to send pre-recorded voice content to mobile phones.