Here’s an app I just downloaded the other day. All I can say is, it’s “awesomeness!” Among the features I am loving so far:
– SMS privacy. You’ll have to input your passcode before opening your messages.
– Customized ringtones
– Signature in all outgoing messages
– Thumbnails of your contacts on each message
– And look at these smileys! 😀
For more info, please visit BiteSMS.