Sign up to use and personalize Caster. A huge load of features is waiting for you after the registration process!
Because Caster isn't as much fun alone. Add friends who are already using Caster, and if you do not have any friends who use Caster, make them use Caster!
Pick an emoji that more or less describes the mood of the message you are about to type. Then type the message. Then send it. It's really that easy!
Simply because friends always take way too long to respond.