I miss them. I hate the "tall" format, I don't much care for TPBs and especially not for paying TPB prices for potboilers that should be mmpbs, and honestly just for overall accessibility the mmpb is a great format. I'll go out of my way to track down, like, an old bantam or signet classic rather than buy whatever current edition is out there, all else being equal. (And this is not new -- I think I stopped buying Harry Potter books after the third one or so because that's when there stopped being mmpb editions, IIRC.) There are so many times when I get some new doorstop fantasy or whatever and it's just unpleasant as a TPB. If the mmpb was good enough for Lonesome Dove and Les Miserables, for The Wheel of Time and A Song of Ice and Fire, it's good enough for new books, too. I just pulled a couple of the Bachman Books from the library and, nope, can't do it, early King is mmpb or nothing for me. It's a comfortable, portable, readable format and its demise has been a danged shame.