I am trying to create one for myself - one that will make sure that I get things done - hubs written, revised, comments answered, even spend time reading hubs, answering questions and sharing my opinion in forums.
My goal is to get off the computer and do other things that need doing. At the end of the work day, I need to stop. This site is really addictive!
I have been changing it though, and haven't found one that works best just yet.