Please note that this is not a definitive list by any means. In fact I can think of many sites that contain hundreds more links than the ones below, (like Windsurf Links for example - 'The Daddy' of link sites or the PWA or windsurf.lap.hu for example), but here is a list of sites I check that are regularly updated with interesting content for you.
The list is growing and please feel free to see and submit more in the Comments section. Enjoy!
Windsurfer International Magazine
Gear reviews/Online Catalogues:
WindsurfReview.net - amazing new gear database and fast-growing review/testing and feedback web resource
ABCWindsurf.eu great news site but also features a full list of online catalogues from major manufacturers.
Worldwide Online Mags:
Windsurf-Today (Spanish)
Ocean Mind (Uruguay)
Windsurfjournal.com (French)
U-Ride (French)
Total Wind (Spanish)
WindDub - news aggregator
Blogs
A day shouldn't couldn't and wouldn't pass by without some great riffs from Maui Blogger GP Cammaro. mauisurfreport.blogspot.com
Kevin Pritchard's always got some nice comments and pics at his Blog Pritchardwindsurfing.com
Makani's www.mauiwindsurfing.net Blog always has pics and flicks of great Ho'okipa sessions and is a valuable guide to a trip to Maui
www.Mauiwindcam.com is also a must-see glimpse into the beautiful North Shore with links to great retro movies and info on Maui windsurfing.
***NEW Mark Van Osch's Windsurfblog.nl pages. [Dutch language]
www.MadWindsurfing.com (English & Dutch versions and very good :) ) and
Brands - the ones that bother to update regularly :)
Any of the hundreds of Naish surfing, windsurfing K*&esurfing or SUP sites...
Forums
If you're in the need for a good old jaw try:
Total Wind (Spanish)
Forum.Windsurfing.nl (Dutch)
Exocet (English&French versions)
www.surf-forum.com (German) and www.surf-wiki.com
Pro Tours
Charities, Campaigners and Lobbyists
SAS (Surfers Against Sewage)
Other
Hopefully enough to keep you happy 'til I'm back!
Please leave any other useful links in the comments section below. Thanks.