I normally wouldn't mention my blog entries here, but this one was about the hackers mailing list, so wanted to let people know about it in case you don't follow Planet Postgres. I scanned the last year's worth of posts and gathered the most used acronyms and jargon. The most commonly used acronym was IMO (in my opinion), followed by FWIW (for what it's worth), and IIUC (if I understand correctly). The complete list can be found in the post below, I'll refrain from copying everything here.