Yep, there's a lot of Mike Schley maps up there, and also a number of 'adapted' 3.5 Faerun maps. That's not going to fly with Wizards. I didn't give permission for my Pirate Cove map to be up there, and there's no copyright info or attribution on any of the maps. It looks like man of them are lifted stright from Wizards map-a-week archives.