This seems perfect for HackerNews comment threads where you never get notifications of responses (at least, I don't) and you'll inevitably forget to check back later.
I would be more likely to use this if it did RSS feeds instead of email. I already get more junk than I want to deal with in my mailbox. Having a news item pop up in my newsreader a few days after I "bookmark" the page would be far preferable.
The app lets you submit a page via a bookmarklet, then emails you a link to the page one week later. It's really useful for saving HN comment threads. HN commenting dies down within a week, so you won't miss any good comments.
cool concept, i've been using <a href="http://www.bmrk.it" rel="nofollow">http://www.bmrk.it</a> for a bit, it's simple and unobtrusive with a similar goal as your service.
Why is your logo so similar to the world wildlife fund? <a href="http://www.worldwildlife.org/resources/media/images/global/print_wwf_logo.gif" rel="nofollow">http://www.worldwildlife.org/resources/media/images/global/p...</a>