Great site, well done! I found a few problems with your templates you may want to look at (especailly with a longer app name):
http://i.imgur.com/DgnnK.png (I had to highlight the text to see it)
http://i.imgur.com/DgnnK.png (I had to highlight the text to see it)
Could you try reducing the font size of the Title text size (under the "Styles" tab in the theme editor)?
When trying to upload a second screenshot I'm getting this (google chrome): http://i.imgur.com/Agk8l.png (after a refresh it seems to be working properly.. odd bug)
We're doing it live here.