Links
Here is a list of sites worth visiting. They range from skatepark developement to skateboard purchase.

Search Engines
Google One of the best search engines available.
Google Image Search Allows you to search for just images.
Teoma Good for finding lots of stuff on skateboarding.
InfoSeek Another good search engine.

List of Skateboarding Links
Skatepark.org If you visit any site go here.
Team Pain Possible developer.
Wormhoudt Another possible developer.
True Ride A skatelite park developer (wood).
Tum Yeto Toy Machine, Zero, Foundation, Pig.
Anthology/Trilogy Midland skate park+shop with photos.
Infinity Skatepark This is the newest skatepark in the area.

Skate Michigan This site lists many of the skate parks in Michigan.
US Skateboard Association Another useful skateboarding site