Looks like Amex's web site had a bit too much to drink over New Years Eve. Seeing some strange Sync Offers show up that I'm not eligible for.
Across *all* of my cards - MR earning and non-MR earning alike - I'm seeing offers for 10% back at Lowe's, Dell, and Staples. Caveat is that only business cards are eligible for enrollment. Where it gets fun is that all of my cards with Amex are personal, not business.
Anyway, if you have business cards with Amex, go ahead and check your offers to see if you're properly eligible to enroll in these.