Best Month for Deals?

Yahoo claims that these are the best months to buy each of these items.I'm not too sure about some of this stuff - for instance, I find that swimsuits were cheaper in January of last year than they are now.  Of course, there's not nearly as much selection in January as there is now, either.  On the other hand, it does give a nice jumping off point for thinking about when to buy big ticket items like furniture and cars.