Ina Steiner at AuctionBytes recently gave warning that eBay may be preparing for a re-indexing of the site (referred to as a "Dance", I guess) and new factors will be given weight in the searches.
Apparently in the near future "seller quality" will partially determine where an item appears in the search results (rather than just ending time). Seller quality will be derived from some combination of feedback rating, Power Seller status, and fielded "item specific" information.
I don't think this will hurt me too much (more than eBay's general downward trend and the expected seasonal slump that is), but every change from eBay puts my teeth on edge these days.
Read the fill article.