[li]Pagination controls are limited in how many pages they'll link directly on the main view. (pages 1-10) page 11+ will still display all pages, under the assumption that if you're browsing page 11 of a forum, you're just as likely to be browsing page 178.5
[li][: cookie :] as a new smilie
[li]Many many code optimizations, a few db optimizations.
[li]Server-side duplicate post detection. If you make a post identical to a post you've already made, the system won't allow it for a 15 minute period.
[li]More speed enhancements...