Gero Vermaas Beans - sells an interesting calendar bean
Herko ter Horst - works for Aduna.biz, senior java developer, involved in the semantic web
Flaming text - by Cameron Gregory, also running 'bloke.com'
Schiermonnikoog horeca - hotel and catering on the island Schiermonnikoog
Fitness-House Nieuwland - fitness centre in Amersfoort
Squash Racket Genootschap Leusden - where we occasionaly go play squash
Jokes.com - free joke and humor related site
UserFriendly - great comics site
Slashdot - check out this popular community!
Antwoordnummer - free snail-mail addresses in The Netherlands
Google - different kind of search engine, based on links to a site
MetaCrawler - searches other search engines
META tags - useful tips about HTTP metas and headers