John Battelle posts Charles Knight‘s list of 100+ top search engines for 2007. I told Charles when he sent this to me yesterday I’d love to see some kind of checklist quiz where you can find out how big a search geek you are. I’ve been to most of these sites, but a few were new to me.
If you do run any of these search engines, this is an open invite to add me to your press list if I’m not on already (dberkowitz [at] 360i [dot] com). I always like keeping an eye on the edge/fringe of search.