I thought there was already a rust forum here. now realizing there isnt and have no fckin clue why not.

I don't think there is enough activity surrounding that particular game to warrant a dedicated sub forum.
Judging from the activity (or rather lack thereof) in the previous site suggestion: Rust I think it's going to be hard to get approved.

Also, remember to add a poll to your site suggestions, otherwise they will end up closed, like what happened here: Rust Subforum?
Check this guide on how to correctly make a site suggestion: How To Post A Site Suggestion

Rust forum? Care to explain what the heck you're talking about.