I was at the 92nd street Cafe about 3 weeks with friends and had a nice time.  Received my bill and we split it three ways.  2 of us put it on a debit card and I charged mine.  When I received my monthly statemnt and additional $4.00 was added to my bill.  When checking with my friends the same thing had happen to one of them also.  If an employee is adding to their tip what do you think they are taking from the employer.  Not a place I would recommend, unless you plan on paying cash so they can't charge you more.