Lizzy, most comp tickets just say comp on it. However, this past week, I almost bought some Spamalot tickets, from Craigslist, that had the tv station who gave them away in a contest, printed on them. Yes, the box office would know by the seat location who actually received the comps to giveaway. Majority, don't care. They received their free publicity in exchange for the free tickets. I'm most excited that this week I won tickets to Sarah Maclauchlin. (spelling and don't want to look it up) I'm a big fan and she is in a small venue so tickets were really high to purchase.