Post a possibly good app idea that you have no intention of doing yourself.

At school we often had to draw class diagrams, basically boxes containing some text, with arrows pointing to other boxes. The free tool we were using for this was made with Java, and would often be very buggy and was generally hated. I couldn't really find anything I liked and ended up making the diagrams in Gimp, not fun. I was really pining for a small perhaps Flash-based web tool that would let me make diagrams and download as PDF.