Wikigrounds - place where you can get info on certain things that may be there. Plus you can add what you know.

The Party - place where highly-ranked BBS users can chill if they're banned or bored...or both.

NG Archive - kept by Aksumka, place that has a lot of the old stuff of old NG. Plus you can get some free stickers if you read how.
EDIT: We recently got an update so that when you're making a post on its BBS, you can see the old posting background that could be seen before the redesign when you posted.

Just be warned. Fag around on any of these sites and you WILL get burned.