Based on Their Browser Histories

An Experimental New Dating Site Matches Singles Based on Their Browser
Histories

Browser Dating users upload their 5,000 most recent searches, which
are turned into a "browsing personality profile" by AI.
...
...
Though, for now at least, users of Browser Dating have a small pool to
choose from--less than 1,000 users have signed up since its launch
last week. Users are first required to download a Chrome or Firefox
extension, which they use to export their recent browser history and
then upload to the site. Profiles feature the usual bare outline of a
person: age, location, gender, and sexual preference. A browsing
personality profile is also generated for each user, offering insight
into how they navigate the internet. Matches are not limited by
location, though Depoorter says there is an option to restrict search
by state or country, if they so choose. Once matched, you won't see
the other person's search history, only a summary of "fun facts" about
shared interests--perhaps pointing out your bizarre Wikipedia
obsession with the "dancing plague" or the time of day you're most
active online--which is meant to accentuate the harmonies of your
online behaviors.

https://www.wired.com/story/an-experimental-new-dating-site-matches-singles-based-on-their-browser-histories/