If you have informative/useful/quality yo-yo site, link KWOS and I'll link you.
Yomania Forums, reviews, tricks
Lee's Yo Yo Page Very impressive list of links.
Sector Y Videos and Yonomicon-style yo yo tricks
Museum of Yo-Yo History History of the Yo Yo
YoYoRadio Neat interviews with interesting people in the world of yoyoing.
American Yo-Yo Association The official website of the American Yo-Yo Association. Yo-Yos, one of the oldest toys known, was named "Toy of the Century" by the A&E Network.
Yo-yo Wikipedia entry Yo-yo from Wikipedia, the free encyclopedia.
TheYo Forum Yo-Yo forum
YoYoNation Forum phpBB Forum
Skilltoys Talk UBB Forum
ExtremeSpin Forum vBulletin
Yo-Yo Manufactuers
Dif-e-Yo They make custom hand-crafted yo-yo's
YoYoJam One of my favourite yo-yo makers.
Spintastics They make great yo-yo's.
Yoyoplay Good selection of yo-yo's to choose from at great prices
ExtremeSpin Online Yo-Yo and Skill Toy Store
YoYoNation Yo-Yo's, parts, and a forum
TheYoStore Yo-yo store
Dave's Skill Toys Yo-yo's, skill toys, collectibles and other accessories
YoYoSam Great Prices - Fair and Easy Shipping
Funtelligent Toys Official Canadian YoYoJam distributor. I get all my YoYoJam's from them.
Video Players
VLC VideoLan Client multimedia player. One of my favourite players. They have versions for Linux, Windows, Mac, etc.
free-codecs.com Site with nearly every video codec available.
MPlayer The best multimedia player for Linux. Includes mencoder, a program that convert nearly every video format to any format you want. I used it to convert VIVO's to DivX.
Slackware Linux My favourite Linux distro.
Ubuntu Linux Another one of my favourite Linux distros.