Some of my favorite web sites:
DX Summit Cluster: World wide amateur radio activity by band/mode.
QRZ.com: Input the radio station call sign and retrieve all the stations background information, QSL information, maybe email also.
ARRL: The American Radio Relay League in Newington, CT. Probably the world's most used and important amateur radio service organization.
Texas DX Society: Local Houston DX/Contest radio club.
425 DX News: Weekly publication of world wide amateur radio activity.
QRZ DX: Weekly publication of world wide amateur radio activity.
Eastex.net: Our local phone cooperative DSL web service. My first attempt at web site development and I used hand - coding (not too hot a site, but was interesting work ..hi)
This site was last updated 09/06/12