Essentially what it says on the tin: you can "collect" auctions and make them into a virtual gallery that's mainly pictures, rather than the ad. Here's the run-down and an easy-to-follow guide (PDF). While I haven't read the fine print, I've started a collection here. The things I need to find out are: * Only eBay US or worldwide? * Do your collection pages and pics go away after a month, like with most eBay auctions? * How many items per collection can you have? Considering that hard drive space is extremely cheap -- you can get 4tb drives for under $180 US -- it's possible that Collections are permanent.