I'm not sure if the promo was taken down or what. It used to be featured on the carousel and you could click through to the list.
I remember these being on the list:
Yossi's (Mapleton)
Mazza & More (+ "pop-ups" Brooklyn Sandwich Co, Fit Grill & Salads, Ultimate Burger and Dog, Fresh Catch Poke, Samurai Sushi)
Glatt ala Carte
You can still select the BOGO items from each store.