> having the user ID of someone you "matched" with Most of the information was already available to someone you matched with (that's the whole point of matchin

> having the user ID of someone you "matched" with Most of the information was already available to someone you matched with (that's the whole point of matching), barring the 'last logged in' value. The real concern is that you can get the user id of any of your facebook friends, exposing information that was previously hidden unless you did match. Matching relies on two-party consent, this violates that for a subset of users.