Perfect! I'm working on a mega-bookmarklet type app (to be released very soon) which organizes various web services and actions, and would love to feature some sort of "discussions on this URL" action.

For now, I'm stuck with "view this on Digg", "view this on Reddit", etc... which will work well for users of those specific networks, but not for someone such as myself who wants to get a wider view of discussions across all networks.

I have to ask, if most comments don't extend to Digg, Reddit, etc, where do they come from? The blog post itself?