The Yankees have acquired Nick Swisher for a couple Wheaties coupons and a prize from a Cracker Jack box.
The domino effect? This could take the Yankees out of the running for Mark Teixeira. Consider the cast of characters that can/could/should? spend time at 1B and DH for the Yanks next season:
Hideki Matsui (if you think he's really any kind of outfielder at this point, I'm not going to argue with you, let's just agree that you're much more optimistic than I am.)
Jorge Posada (if you think he's a full-time catcher at this point, I'm not going to argue with you, but let's just agree that you're much more optimistic than I am.)
Johnny Damon (if you think he's really a centerfielder at this point, well, you get the idea)
In addition, it would be an absolute waste for a team to acquire a Mark Teixeira and plan on playing him only 80-90% of their games. Sure, the Yankees might not be done. I don't think Matsui or Posada are unloadable at this point, but Damon actually could be, which would make Swisher and Nady the corner OFs. Not sure how likely that is, who knows.
In any case, what IS likely now is that the Mark Teixeira competition may now be a two-horse race. Among the big spenders, the White Sox and Cubs have no need or spot for him, and neither have expressed the desire either. The Mets will stick with Delgado. The Dodgers are probably going Manny w/r/t a big bat. The Angels and us are probably the only teams remaining that are really serious about Teixeira. This certainly makes it easier to acquire him, for those who do want to bring him on-board. For the Yankees, it's a decent move to increase flexibility and to bring on a bat at a cheap price (in players) that has the potential to bounce back and be pretty productive.