ClearChat

Commands

/clearchat clear or /c "clearchat.clear"
/cc "clearchat.cc"
/clock "clearchat.lock" (give a player "clearchat.lock.chat" if you want them to be able to chat when the chat is locked) v1.2 and up
/clearchat reload "chatclear.reload"
"clearchat.ignore" (when a player has this permission he wont see the /c or /clearchat clear message) v1.2 and up

use %Name in the config to show the name from the one who cleared the chat (this can be used in /clearchat clear, /c and /cc)

clear-message: '&1[&bClearChat&1] &bChat has been cleared by&d %Name&b.'

cc: '&1[&bClearChat&1] &3%Name&b You have cleared your own chat'

no-permission: '&4[&cClearChat&4] &cyou dont have permission to this command'

Reload: '&1[&bClearChat&1] &bConfig reloaded.'

lock-msg: '&1[&bClearChat&1] &3the chat is locked!'

lock: '&1[&bClearChat&1] &b%Name&3 has locked the chat!'

unlock: '&1[&bClearChat&1] &b%Name &3has unlocked the chat!'

AntiAdv (http://dev.bukkit.org/bukkit-plugins/antiadv/) a Anti Advertise plugin with alot of features
NoHitDelay (http://dev.bukkit.org/bukkit-plugins/nohitdelay/) A plugin that lets you manage the delay between 2 hits in pvp.
AutoWelcome (http://dev.bukkit.org/bukkit-plugins/awelcome/) A Plugin that lets players with a permission say welcome to new players!