Good job myself, I've done well here, so far I remember when I was at 338 posts.
How did I do it?
Well, the process isn't that daunting as it is complicated. All I had to do is make a new thread (take this one as an example) and the back-end automatically upped my posts by one. So you see, anyone can do it!
To hit 1000 posts simply post 1000 threads, but please, don't post them in a set interval or in a very short amount of time, the mods & community will get suspicious! Shhh! Keep this thread a secret!