Useful Links

Communities:      
Pojo Forums   
Weiss Schwarz Foreign Community  (Facebook)
/r/WeissSchwarz  (Reddit)
      
Other blogs:      
Side For One      
WeissSchwarz @nk-ds.org           
TCG, shiyo?  
Outakuya
Plus2Soul 

Inactive blogs (as of 6-3-13): 
wSCHAWRZ
Kirakiracards
       
Video channels:      
Plus2Soul       
Heart of the Cards TCGs  
ClimaxCombo
      
Translations:      
Heart of the Cards       
WeissSchwarz @nk-ds.org       
Little Akiba  

Useful Tools:
Nagato.asia         A Japanese website deckbuilder. Useable through Google Translate
Frank Chen and William Lam's Deckbuilder
Arwin Pratomo's Cancel-Chance calculator
      
Online Retailers:
StrikeZoneOnline      English, EN only, Tons of singles, In USA
ToyWiz       English, EN only, Tons of singles, In USA
Ideal808       English, EN Cards only, Many Singles, Ships to US
TC-Generation       English, EN only, Tons of singles, In USA
Hobby Store Shockwave    English, EN Cards only, Some Singles, Ships to US
Hammergirl Anime        English, Sealed Product, In USA
AmiAmi        English, Sealed Product, In Japan but Ships to US
Desu-Nation        English, EN and JP cards, Sealed Product, Some singles, In USA
Yuyu-Tei        Japanese, Singles, Ships to Japan
orenoturn        Japanese, Singles, Ships to Japan
BigWeb       Japanese, Singles, Ships to Japan
      
Shipment Forwarding Services (to buy from retailers that don't ship out of Japan)      
Celga 
Tenso
      
Official Sites:      
Weiss Schwarz USA       
Bushiroad Main Site      
Bushiroad Weiss Schwarz Site      
Bushiroad English Blog