I didn't mean to imply that programs were cross compatible, only that porting an app would be much easier because of shared code.
I didn't only purchase Windows 8 because of the app store- 30 posts ahead of me already mentioned a lot of other positive reasons that I agree with, but the App Store is the place where it has the most potential. I love live tiles and how they show new information without ever launching an app, or having to open a browser and go to a web page. I like having a clean, simple app like the one for eBay or the Giant Bomb app. It's quick and easy - two things important to me because I don't often have time to sit in front of the computer.
I don't enjoy most touch based control schemes so having similar, cheap games available on the PC with mouse/controller support, seems nice to me. So faster boot times, built in anti-virus, quick and easy access to information when I need it, and simple, fun games tied into my existing gamertag/friends - which is all in addition to the things I can already do on a PC - seems like a no-brainer for 40 bucks.
I did edit out the demo version part of my previous comment, I could've swore those were there in the Consumer Preview but I mustve been thinking about my Windows Phone. Probably a separate discussion but I think trials would really help in game sales on PC. One of the chief reasons that pirates say they steal games is because they wanted to try them out (not sure if I believe that reason is true). Yes most Xbox games don't have demos but ALL Xbox Live Arcade Games do. I own too many Arcade games to count at this point because I've downloaded the demo, enjoyed the game and then bought it. I brought up Steam because to me, mostly console but would like to play more PC guy, I can never tell if the smaller indie games on the service are any good. Steam can put a game on sale at a huge discount, pushing it to number one on their top sellers. That gives me no indication of the quality and even though I listen to several gaming podcasts (of which there are less and less all the time), it always seems that game journos have a caveat about an indie game's quality. "So and so Game is really great and inventive but......", you know, comments like that. Give me a timed trial, something that doesn't involve needing half the development team to spend weeks of time creating a vertical slice, and let me judge whether its worth my time and money.
I thought the Windows Marketplace would have these trials, but I guess I was daydreaming. Oh well, Adventure mode in Minesweeper is pretty damn fun, especially for free (Ads only seem to play during the daily challenges, not Adventure mode like was mentioned on the Bombcast.)