EVERYONE - you need to keep ALL correspondence that you receive from Buy.com. You should also be documenting your telephone conversations (who you spoke to, when, what was said), as well as be taking screen-shots of the rebates webpage AND the product description page showing the "buy one, get one free" offer. At 12:01 AM, I'll be capturing yet another screen-shot showing the "rebate offer" still on their website as of 07 March 2001 - four days running.
You should also be making your calls via a cell phone or other traceable means, since their customer service number is an 800 number (which may or may not show up on your phone bill since the call is not billed to your number). This way you have irrefutable evidence of calling to "clarify" the offer, as I did TWICE on Sunday once it became apparent that others couldn't keep-shut until after the switches shipped (damn, calling the CSRs screwed the deal AGAIN!).
And for those of you that are really adventureous, place a second order for the same number of switches.... I'll leave that one, at that.