Many Minecraft servers have website "stores" that allow players to purchase permissions in exchange for donations with the aid of bukkit plugins. (www.enjin.com does a lot of this)
Other websites also offer dynmap display pages and voting buttons for the various server ranking websites. I would love to see widgets that would display such information.
If you need any assistance, please let me know.
This is something we may revisit in a future release, but isn’t currently planned to be in a development sprint.