Not very technical this time, but definitely nerdy
Ever been annoyed by eBay ads with only the green camera icon on the item list page? eBay charges extra to let sellers display a thumb aside the item title, so obviously many eBay sellers only put images inside their ads - showing up after you click to view the ad.
With Greasemonkey and the Firefox web browser, the world in this respect looks a bit brighter. Greasemonkey is a client-side scripting engine addon to Firefox that processes web pages that you view in realtime.
Add this script to Greasemonkey and you get thumbs on all eBay ads that have images!