Interesting product, but I have to admit I'm skeptical this will be a success unless more social features are added. Being able to see comments from your friends (from twitter, friendfeed, facebook etc) about a page while you are on that page seems quite useful to me (e.g. what if this thread showed up in sidewiki if you happened across the article without seeing this thread first?). But seeing random comments from people I don't know, even if they are good comments, just doesn't seem that compelling to me: many sites already have comment features and I rarely find them useful. Granted there is not much ranking applied to comment features on these sites, maybe that will make a difference. - Evan Parker