Just because it's "on track" to sell "1.5 million units per year" as reported by a third party site it should have it's own forum on AVS? Nothing to clear up about that, AVS doesn't need an Apple TV forum.
BTW, compare Apple TV to a Media Center Extender, not a Media Center PC. When you can use Apple TV without a PC/Mac on the other side, let me know.
Another BTW, There are over 10 million Xbox 360 Extenders out there currently. And, someone should also let the author of that article know that Vista (that OS that ships on 90% of PC's) includes Media Center in two SKU's (ships on most PC's, $600 and up).