This thread is for gathering different DM-related websites and channels. They can be related to buying cards and talking about them, such as forums, DM YouTube Channels, auction and shopping websites, Japanese proxy services, etc. Let us know if you think we are missing something. Without further ado, here are the lists.

The Official Japanese Home Page
Takaratomy - Duel Masters

Forums & Message Boards
Pojo Boards - Kaijudo / Duel Masters - English
OCTGN - Duel Masters Boards - English
Reddit - Duel Masters - English
Duel Masters Finland - Finnish / English
Polskie forum graczy Duel Masters - Polish

Facebook Groups
Duel Masters Unplugged - International
Duel Masters OCTGN Group - International
Duel Masters - International
Duel Masters - Last Generation of Duelists - International
Duel Masters....Let's Duel.... - International
Kaijudo Generation (DM/Kaijudo fanbase) - International
Duel Masters OCG Team Singapore - Singaporean
Duel Masters Finland - Finnish
Duel Masters Gruppe Germany - German

Card Databases
Duel Masters Wiki
CCGDB - Duel Masters

Online Dueling
Trade Cards Online
OCTGN - Duel Masters
Duel Masters Civilizations

Online Card Selling
eBay - International
Amazon - International
Carousell - Singapore / International
Allegro - Poland
OLX - Poland
Tori - Finland
Huuto - Finland

Japanese Proxy Services
From Japan (Recommended)
Buyee
Rakuten Global Market
Goody Japan

Youtube Channels (Many have moved to Kaijudo)
Takara Tomy Channel: Duel Masters - Official
TheKaijudoChannel - TCG
EarthP0w3R - TCG
duelmastersfanatyk - TCG
thundersultan - TCG
yoshiki419 - OCG
Tolarian Community College - Accessories