Great project! Never heard of Tomboy before but found great info here and here. (I wish your title -- which, unfortunately, can't be edited -- said it was a note-taking app. It might attract the attention of more Tomboy-ignorant people like me.)

There's also an integration of Tomboy with Firefox called Tomfox, which reminds me a bit of BrentDC's Quick Clip. (Don't I wish your hildonized Tomboy could be combined with Quick Clip!)

I wish I had the skills to help (but I don't). Since I'm a Windows (and Mac) user, I don't know about Tomboy except what I've read in the above links, but it seems like it would more than satisfy my wish for a program like QuickDex.

Good luck, and please keep going!