Pretty badass. I might be crazy for suggesting this for this idea(as this is pretty off) but it'd be terrific if I could take a snapshot of a page. For instance, I run the tool, the page I'm currently fades to black opacity(~60%) and I select the portion I'd like to share and click SAVE. It's automatically posted to my unique photoblog without me having to login(ugh, the login part is really too much work). As a user, I'd love to open up a photoblog of parts of sites which I love.

Cheers and good luck with the project, you're on a great track