After trying InterWrite Keyboard a few times, I honestly don't see what's special about this keyboard. It has a "light" (look more iPhone-ish), and it supports multiple Latin/Slavic languages, and it has a TINY size. It has all the special characters. However, I don't see stuff like word prediction, auto-correct, and other fancy stuff with this keyboard.
I guess if you need to switch languages a LOT, this may be of some use. Otherwise, sorry, there are much better keyboards out there.
Rating: Skip it