Just re-jail broke my phone running iOS 5 because I read that it was running without bugs but for some reason my Bite SMS isn't opening. Is this app still not updated yet?
Yes, the most current version of BiteSMS is compatible with iOS5, however it is still in beta right now. The current version is Beta 6.0.11, it works on iOS5.
The URL that f4780y posted worked fine for me. The text you see on the screen is normal when adding a new Cydia repo. Just return to Cydia and search for the new BiteSMS after adding it.