I can understand how useful it is. I use it in Pidgin (a multi-protocal chat IM client). Especially since you can turn something like ilu into "I love you". Which is extremely handy on the n800 when talking with your girlfriend lol.

The problem is, it shouldn't be difficult to program it for any single app to implement for its own purpose. But what about on a multi-app basis as in it's part of the operating system to check text in any app? Are their APIs or methods that would allow that (anyone know who is familar with the inwards of the operating system?).