eBay’s Valet program, which sells people’s items on eBay on a consignment basis, has sparked criticism in its first year of service, but is improving. Here’s what consumers should know about eBay Valet. A lot of us have stuff that we don’t use, that clogs up our drawers and closets and basements and attics without imparting joy or value to our lives. We know we should eject these extraneous objects from our homes, but we’re busy, we’re tired, we don’t know the best…