If your not familiar, MCMMO is a plugin that allows players to level up in different skill categories throughout minecraft, including but not limited to, mining, wood cutting, excavation, acrobatics, etcetera. With each skill having a power up that lasts longer with each level gained. its a sure way to get players focused on progressing the game. The MCMMO leader board also causes some players to be more competitive. The more competetive a player is the more active they will be. Therefore if you find away to compensate for the lag it can cause (with a lot of players using it) I think you'll find it useful in your servers development. Increasing revenues will increase your servers budget to advertise, expand disk space, and just generally progress your server. my idea doesn't have to be done with MCMMO. but it is a great plugin to get donations. Always add more donation offers that entice players to buy more. package deals are especially enticing