Happy iPad 2 Day. If you're reading this in line at your local Apple store, you're indeed a lucky person. Reports are coming in that certain Apple stores, and even partner stores like AT&T, Verizon, and Best Buy, are seriously understocked, with some in line not expected to walk away with Apple's latest tablet today. That has sparked some interesting entrepreneurship of its own.

A few phone calls around the Seattle area showed all Apple stores stocked, though some smaller partner stores were not. One Craigslist posting apparently already sold out online. This seems to be because Apple didn't accept preorders for the device. The original iPad's launch, though, did include preorders, and things went exceptionally smoothly. From what we're hearing, that's not the case this time.

But why wouldn't Apple allow preorders for one of its hottest releases of the year We're can't say for sure, but we do have some guesses. We're sure you do, too. Vote in our the poll and elaborate in the comments section.