Links to DX and Contest Sites
425 DX News Bulletin Search from Italy (An Excellent Source)
The DXer Page by K5IDX (QSL Look Ups, Gray Line and more)
QRZ Call sign look ups and more
LOGIC 5, By PDA (This is the every day logger that I use)
Hamrad Lots of links. If you can't find a ham site here it doesn't exist.
http://www.wb4aej.com/hamdomain A good site with instructions for setting up your own Ham Page on the cheap
K4UTE Call Sign Look Up. Got to be about the best look up service I've found on the web.
If you have a link that would be relevant here please let me know!