A couple (so far) of BA blogs (and TPG) are starting to pimp a 20K offer for the Amex Blue for Business card. It's actually not a bad card to have in your portfolio especially as a no annual fee business card. However, the Membership Rewards points earned on this card (as with certain others) are only transferable to travel partners if you also have another card that includes transfers as a benefit.

OMAAT posted the offer without mentioning this key caveat, even after it appears commenters pointed this out. Deals We Like also posted it without any notes about the transfer restrictions, and after a comment pointing this out, the post is down the memory hole.

To their credit, at least TPG has updated their post to make this clear.