Annual Twitter recommendations

At a reader's request, last year I wrote up a list of Twitter feeds that I follow, and consider essential to keeping my miles and points game in top form. Since the game is always changing, I thought I would turn it into an annual tradition.

When I wrote this post last year, I included a few of the biggest affiliate bloggers, simply as a way to keep your finger on the pulse of the mainstream. In the intervening year, those blogs have degenerated further into corporate advertising engines, and I can no longer recommend following them even purely for informational purposes. It's reached the point where I think they'd receive a stern warning if they ever did write something worth reading.

What do you think: are there any other essential Twitter feeds that belong in this list?