Very cool, I was experimenting with a similar implementation of this a few years back. We were using a browser extension to handle the posting to the profile for you. However, we noticed that that profile was cached on the server so you would end up having to wait a long time to get a new version. I believe we tried appending a random query param to cache bust but the server didn't seem to care about that.

Have you ran into this? If so, how did you get around it?

[Edit] Here is a link to the now dead project :( http://web.archive.org/web/20161225152153/http://www.clap.ch... We briefly mention how it worked but didn't go into full detail