Just some idea while browsing wp plugin list

• admin new post approval, use PreAddItem/PreEditItem, save it off for approval like NP_CommentControl, print a brief message
• private post/category/note (in a post for logined)
• lock old post for comment after x days, via a skinvar that trigger update once a day or via NP_Batch (pending)
• blogroll w/ Technorati and del.icio.us tags support
• xbel support for blogroll
• Audio Scrobbler
• bloglines
• fortune
• XFN
• permernent redirect with HTTP 301
• js toggle box
• ajax poll, auto refresh
• better use profile, using (per) user options??
• flash mp3/video player http://www.1pixelout.net/code/audio-player-wordpress-plugin/
• shoutcast what's on
• email address camo ing
• spamQuiz ie what is 1+1? == 2
• stock quote @ http://andy.hillhome.org/blog/code/stockquotesidebar
• flashfader http://www.lynk.de/wordpress/flashfader/
• bad behavior http://www.ioerror.us/software/bad-behavior/
• spamkarma http://unknowngenius.com/blog/wordpress/spam-karma/
• wp-flp http://roel.meurders.nl/wordpress-plugins/wp-flv-video-player-plugin/