Just noticed what I think is a new, undocumented feature in WebOS 1.4. Now, autocorrect entries can correct words mistyped with punctuation, which previously wasn't allowed, providing the correct entries are included in the autocorrect file.
So now, it's possible to autocorrect ",e" to "me" for example, if you hit the "," key by mistake.
Perhaps Palm is looking to expand on their autocorrection feature in upcoming versions?