The following is a list of links we feel might be useful to Touhou fans, old and new alike.
BulletForge
Central location for user-created bullet hell scripts and games
Eientei Forums
Large and active Touhou forum site
Gensokyo Broadcast Network (Twitch)
Gensokyo Broadcast Network's Twitch page
Gensokyo Broadcast Network (YouTube)
Gensokyo Broadcast Network's YouTube page
Invisible Games and Japanese
ZUN's blog, mostly used for game development news
Maidens of the Kaleidoscope
Popular and active Touhou community site and forums
MoriyaShrine
Fantastic resource for Touhou game and music information
Touhou Character Sorting
Rank your favorite characters
Touhou Patch Center
Soft-patched translations of the games in multiple languages
Touhou Wiki
Wikipedia featuring everything related to Touhou