Here are some links to other metal detecting and treasure hunting sites.

Forums
California Metal Detecting Jeff Kinzli's California Metal Detecting Forum. Discussion board for metal detecting in California (Beach, land, etc.).

BBS forum Forum for Minelab Sovereign users...Loads of info and tips.
Beach & Water Hunting forum

Favorite Sites
Lost Treasure Online Website for Lost Treasure magazine.
TreasureNet Site of Western & Eastern Treasures Magazine.
Tide Charts Tide predictions for a variety of areas.
The Golden Olde Great Site! Especially like the articles on beach and water detecting.