What is this blob protocol? I've never seen it before and Google just thinks I meant to say blog (grrr, google).
You get to it by clicking export: blob:http%3A//geometee.com/1692d5b3-b837-4181-bae4-7c6a997ab22a
Ah, found it, very interesting: http://dev.w3.org/2006/webapi/FileAPI/#url