RATs. A keylogger will work too, but let's say that the dude is still logged in and I want to get on his account, I'd simply kill the the java process. Plus almost every RAT now has a keylogger in it.
Has nothing that any other RAT doesn't has, imo. The RuneScape pin logger? Myself, I use Farenheit pinlogger if I come over someone that has a pin.
I've used cracked 4.2 and 4.8, and they're ok.
Just my thought.