In WoW most people perfer to just buy-out actions becuase waiting 20 hours to win a item is too long for most people.

I perfer short times that actually promote bidding like 10 minute actions something i can sit and watch while I and others bid.

From all the Auction House pictures I have seen they all seem to end in the letter M for minutes, so whats the post times like wow as low as 12 hours to 2 days, or is it shorter to promote bidding like 10 minutes to 1 hour. I didnt see it in the Q and A for the Auction house, is that still being worked out?

Any one know?

Those are just countdowns, I don't think post times have been finalized but they're likely not going to be much shorter than a day or so. Also keep in mind there's automated bidding for you. If you want to bid on an item you can set a maximum you want to bid, and the system will automatically counter-bid against others up to your maximum. It's quite a bit like features that eBay uses, if you're familiar with it, and in my experience there's a lot more bidding that buyouts in that type of system, and usually some last-minute bid excitement to try to snag an item.