It makes sense to charge for a service like this which keeps a copy of the page. But I wonder if there are services that just rely on Google and do some form of

It makes sense to charge for a service like this which keeps a copy of the page. But I wonder if there are services that just rely on Google and do some form of Google custom search on your bookmarked pages. It might be Google comes with such a service already. I was able to do a full text-search of my Google History (http://www.google.com/psearch http://www.google.com/psearch), but it didn't work when I tried an old result from my bookmarks.