Just signed up. Looks like an interesting concept. Just a thought, but why not hide the overlaps I've already added? Or as an option. Would definitely help out; less scrolling down the better. Also, newly added overlaps with a "new" icon?
Hmm an option to hide does make sense. Still need to have an easy way to navigate to your overlaps (there's a "My Overlaps" link, but it's not very prominent).
With more data it'll be also be possible to suggest overlaps to you based on what you've already joined.
