[sorbus]

Chrome already has full-text search of every page I visit (and keeps it around forever, as far as I can tell). The only advantage this seems to offer is letting it be accessed from anywhere, and storing it in the cloud. I'm very unsure whether it's worth the risk of funneling every page I visit to a third party. Yes, you have a privacy policy; that's great. What are you going to do when someone hacks into your service and steals all the data that you've collected? Is the data encrypted - and if so, does anyone other than the user have the key to decrypt their data? Why doesn't your site support ssl? You offer users the ability to delete all their data; how long will it persist in back-ups? If you have to restore from backup, how will you make sure that deleted data doesn't get back in? What measures are you taking to ensure that no one steals your backups?

EDIT: Oh, and some questions about the interface: Chrome's full-text search only finds instances of the word. What additional features does yours have? Can I specify a date range to search within? Does it support operators; can it give additional weight either to frequently visited websites or infrequently visited sites? (a "the thing I'm looking for was on a site I'd never been to before" checkbox, or something like that). Is it technically feasible to present a demo account to let people play around with the interface and see if your service is worth it before giving you their data?