...their marketing list, we may have matched...
That's how they didn't share the info. Twitter are saying that given a list, some entries on which already contained email, phone and such, those items would match to what they had.
No harm done bar breaking the bit in their own Ts & Cs where it (presumably) says something like "we will not use this information...", the operative word being "use".
This begs the question as to where the ad-slingers did get it from...
Biting the hand that feeds IT
