I was talking (I think it was with Mike again) the other day about how the single document interface for IE is not ideal. The problem is that you want to branch off from a particular page when you see something interesting but not lose the linking page. Currently "right-click->open in new window" and leave the new one to load is the way I do this, but then you end up with a big stack of IE windows that you end up flipping through to try and find the one you want next. We decided that a browser that hosted multiple pages with a really nice, quick way of identifying which was which was what you wanted. Well, it seems like iRider provide a solution.