Earlier I was jumping around on servers, and I came across a server where they use "promotions". I'm not sure what else this plugin does, but I do know it's a quick easy way to become a member without them even having to close out of minecraft. They had a rules room, and throughout the room they had a post with for example "first letter - R" you would go on to read more rules then there would be more random "letters". At the end of the rules you room it said "once you've got all the letters enter the secret word into the chat box, and if correct you'll become a member"

I thought it was pretty cool, easy, and fast.

I'm not sure what Noobscraft does since I've been a member since V2, but if this sounds interesting I'm glad i could help!

If Joe, or any other mod would like to check out the plugin I still have the I.P. address, but I won't include it in this post because it'd be violating a rule.