WebSite Watcher does the same but
can deliver results in an RSS feed, that’s pretty hip.
[ADDED 12/05/06: actually it can monitor in RSS pages, not deliver in RSS]
So how is FeedWhip a different webpage monitoring tool…well it is not as sophisticated as the tools mentioned above,
and it really has nothing to do with feeds, but on the homepage it does aggregate everyone’s feeds (websites monitored). You can’t look at a user account, but you can look at the latest websites monitored, the most popular websites monitored, and todays top websites monitored. When you click on a monitored website it will take you to it’s page where you can see the last snaphot, number of subscribers, and you are one click away to add it to your subscriptions.
[ADDED 12/05/06: Feedwhip generates an RSS feed for the webpage you are monitoring…get updates via RSS or email…RSS for your blog post hack]