It could be misused and leak vital data but so can your browser history and the data that ISPs and social media and search companies have on you. They say all processing will be done locally but you'd have to be a fool to trust that. I'd prefer to see this as a product that you could connect to your computer which would take care of all the processing and storage and have reasonable guarantees on privacy and encryption. I'm sure we'll see something like that, unsure of how successful it would be in the long run. It is a useful feature, being able to "recall" everything you've seen on your computer. I get the naming but it's bad branding since recall has negative connotations and is such a common word with many uses. Time Machine was already taken ;P They should have gone with something more generic like Windows History or Microsoft Memory. If they wanted to be cheeky then Tip of the Tongue or Snappy the helpful screenshot as an animated camera would have been better.