Art:

Jirko Art - Excellent EBM, Gothic, Industrial band related art

Clothing:

XtraX

http://www.x-tra-x.de/index-2.html - Germany based (they have an online shop)

Art of Dark

http://www.art-of-dark.de/de/index.shtml - Germany based (they have an online shop)

Online Egroup:

http://groups.yahoo.com/group/NYC_Goth_EBM_Industrial/ - NY/NJ oriented

Science:

http://www.badastronomy.com - Excellent site for serious science and hoax debunking

Friends:

Losing Venus

*More links to come soon*