- "LEGENDARY PICTURES"
- *Challenge You* It's April's Best CY Medal of the Month Challe
- 15 Challenges - Photo Contest
- 3Way Challenge (Closed for Now...)
- Actpro
- Adobe Lightroom
- Canon DSLR User Group
- Comunidad Fotoguia.org
- Flickr Challenge Group!
- Foto Competition - Bronze, Silver, Gold & Platinum!
- Foto Competition Silver
- FRIENDLY CHALLENGES
- FRIENDLY COMMENTS (only INVITED photos!!!!)
- Gold Star Awards Level 1 (1P/3C)
- Hong Kong 香港
- pre*Game Challenges*
- SNA 人像攝影分享群組
- STARS AWARD of the FRIENDLY CHALLENGES
- Strictly GeoTagged (no 30/60 limit)
- Super Hero Challenge Group. CLOSED DUE TO LACK OF INTEREST
- The Challenge Factory - Photo Contest Group
- The Challenge Factory: Ultimate Grind Winner's Gallery
- The Challenge Group Game
- The Mother of All Challenge Groups - SADLY CLOSED
- Thumbs Up Challenges NEW RULES AND FORMAT
- Visual Delight
- Wonderful photos for the world Pls post 1-comment 3 CLOSE
- WOW just WOW (Competition VOTING)
- You Rock! Challenges-SLEEPING because the lack of participatio