I just thought it would be good to put a time limit on items sold in it, maybe a week max, this would clear out all the items in it people are selling that are just so inflated that no one in their right mind would by it.

^^

This, this and 3 times this.

There are a number of problems with the auction house but having old auctions time out would go a long way to solving most of them. I was looking for science blueprints I don't currently know today and its basically impossible. I can't limit the search to things I can use so I'm forced to start guessing name words (I'm looking for new things so i don't know the names) I can guess a generic word like prototype but there are over 400 'Prototype Gravitic Teleporter Schematics' on the auction house so if there is anything else containing that word then I'm not seeing it

The AH is getting so full of junk and the searching isn't fine grained enough to help you differentiate the things you actually want that its becomming impossible to use