I've just noticed this in the help pages:
Multiple listings, please use Multi-item Auctions
It is not fair on other members to show row after row of the same identical item.
This has an adverse effect on the entire community.
If you want to list multiple identical items please list as a Multi-item Auction.
We currently allow one auction, be it a normal or multi-item auction, to be placed in a single category. Do not place the same item in many different categories.
How nice to see "Multi-item" being used instead of Dutch, which was never very helpful. Has anybody noticed if this change in terminology is site-wide?