This is a pretty neat idea.
I'm not entirely sure how I'd make use of the iframes, but I'm already testing this out as a bookmark clustering tool, so I find the open all feature quite useful.
Awesome, thanks for checking it out, much appreciated!
Right now, my main use case for the iframes is quickly checking for visual regressions across all the sites I manage.
Every morning I would go round to all my sites and check each one by one from a set of bookmarks, to make sure they were looking good and accurate. This way, I can do all my morning checks from one site.
