Personal note:

All Shoppa rules - regularilly updated
Rare Maps - this one too
Mapping Research - some interesting information
Shoppa - proposal of new scheme for Classic league
Bungee Shoppa - wide remake
Chute Shoppa - original scheme
Sheep BnG - final scheme
Bungee and Jet Pack Sheep Glitch - original scheme
Crate Collector - original port to WA
Surf Shoppa - boring antisink game
SuperSheeper - wide remake
Kaos Sheeper - original remix
Panic Shopper - original variation