I can't find any threads discussing this, but the FBI Anon mentioned certain keywords to search for and "cards" was the first one mentioned.

Theses are definitely 2 of the strangest ones IMO: https://wikileaks.org/podesta-emails/emailid/17079

Tony Pedesta writes to John and Mary: "In top front of my backpack there are a stack of cards, pull out two Sotheby's cards. 4 free admissions to Whitney Meet at home or there?????"

SO my thoughts on this one make me immediately think it might be connect it to an auction, Sotheby's being a famous highend auction house. (Not necessarily tied to the real Sotheby's but probably just code word for a human trafficking type auction.) The cards are probably special passes, with passwords on them or something. The question is: "what is Whitney?"

The other strange one is this one: https://wikileaks.org/podesta-emails/emailid/11430

From Gabe to John and Mary Podesta, "I got three Bday cards from you guys today. Thanks so much and I hope you don't mind that I opened them early!"

Now on first read, you might think he got 3 cards, one from John, one from Mary and one from Tony. But he only addressed his email to John and Mary, he didn't email Tony. Furthermore, would you really get a separate Bday from each of your parents? And what are the odds that all 3 cards arrive at the same time, assuming they were mailed, they all arrived early on the same day. Third, if they're really Bday cards and not something else, why would you say I hope you don't mind if opened them early. No one cares if you open a "card" early. Its just weird and makes me think it is something else. Are these cards special passes, like the Sotheby cards? Maybe like currency you can trade them in for a slave. Any thoughts?