I've been looking for a Auto Promotion Plugin like MasterPromote for awhile now and I finally decided to ask the bukkit community. MasterPromote doesn't work on my server (Crashes it, might be a plugin conflict?) so I need another alternative. Thanks!
If you are looking for playtime based auto-promotions, check out this plugin. It does that and much more. http://dev.bukkit.org/server-mods/ontime/