[simandl]

These are important questions. We aren't storing any of the images used to search, and the email addresses are going to mailchimp lists for opt in and opt out. As we role out the next set of tools, which let users flag images and create lists from them, we'll email the mailchimp lists with more info.

When we enable sign-in, we'll also add a privacy policy, because at that point, we will store some images, on request, to use them to make finding other works by the same artists easier.

Opt-out image URL lists will be made available to the dataset owners for removal. Opt-in image lists will be public.