Excellent resource. Excellent communications from the dev. Thought I'd found a bug ( I hadn't, I'd just done something simple wrong ¬_¬) and I got a response to my message swiftly - pretty much immediately - and an invite to a chatroom for me to be taken through the process.
It's not a major part of my server but the features and allowances it adds are simple, incredibly adaptable and allow a lot of customisation and rewards to be handled neatly.
Boo mcMMo Reward 2015-08-08
Plugin for mcMMO providing rewards and action on level up