This was released ages ago, removed, re-uploaded, removed, re-uploaded, and now here's an official thread so that it's easier to find.
I posted the file on a help thread a while ago on an alt account, where somebody was requesting it.
Sorry to those of you who spent a long time trying to find it. Hopefully there won't be any more requests for it now.
The file was checked and approved at the time, so you can download it straight away. It already has 200+ downloads, so people clearly came across it.
What does it do? Collects usernames in-game and puts them into a list format, which can then be saved as a .txt file. This file can then be used in a cracker of your choice. (I'm aware that many crackers are outdated, but it is very much possible to find/create a working one)
This is still the best grabber as far as I'm aware, although it was made quite a while ago now. At that time, I spent countless hours trying to find the best methods.