- !Flickr Chain Gang!
- !SkyRhythm
- #SFflickrmeetup - San Francisco Flickr Meetups
- 1 Photo Per Month
- 50 cups of coffee
- 50mm (The original 50mm group)
- Adobe Lightroom
- Altered Signs
- America
- AMERICAN PHOTOGRAPHER
- Architecture
- Artitecture
- astrometry
- BEER
- Birding In The Wild
- Cafes, Coffee Houses, Burger Joints, Food Carts.
- California Wildlife
- California's Bay Area Group
- CERN
- Cheverly, MD
- Chicago Straight Street Photography
- Chicago Transit Authority
- Chicago...
- Chinese Restaurant Worldwide Documentation Project
- Christmas Trains
- Digital Infrared
- Drive By Shooting!
- Entitled
- Fire near the Dish, Stanford
- Flickr Bingo 2
- Flickr Bingo 4
- Flickr Bingo 5
- Flickr Hacks
- Flickr Ideas
- Flickr Turns 4 - The Party!
- Flickr Worldwide Photowalks
- FlickrCentral
- flickrColors (blue+pink)
- Food Porn
- Free Association!
- Geneva area_Pays de Gex
- Giant Food (and other things too)
- Gorillapod Love
- Great Signs
- Handheld night film street photography
- Hi-Matic
- Hiking
- I Shoot Film
- In Numerical Order
- In the Frame
- INTO THE DEEP WOODS
- Kodachrome
- Laboratory
- League of the Empty Chair : Interestingly Out Of Place !!!
- MA & PA MOTEL SIGNS ONLY!
- March for Science
- Mundane Details
- National Register of Historic Places
- Night Images
- Nikkor
- Nikon D50 Users
- NIKON D7000 CLUB
- Nikon DSLR Users
- Nikon Film Cameras
- not my dog
- Particle accelerators with my eyes
- Particle Physics
- Pentax Auto 110
- Photographing Bob Dylan
- Photography is not a crime
- Photomino
- Physics
- Pictures With Stories - 5 sentence MINIMUM
- Power Lines
- prime lenses (fixed focal length)
- Pro Labs
- Project 365!
- Road Trip America
- Science Nerd Depot
- Self-reference
- Sigma Fast Primes (30mm f/1.4)
- Similar Photos
- SLIDE FILM (*Not Xpro*)
- Snap Game
- stair porn
- Stanford CA Retreat 2005
- Stanford Photography Club
- Stanford University
- Stick Figures in Peril
- suburbanality - little boxes on the hillside
- Tamron SP AF90mm F/2.8 (Di) Macro 1:1 Group
- Tenuous Links
- The Bistro (Founded 2008)
- The Nikon F601 (N6006) and F401 (N4004) Appreciation Society
- The One Wheel Club
- Things looking like the flickr default icon
- Trains and Trolleys
- US Route 61
- Utata
- William Eggleston
- WIT
- Yashica Electro 35
- Your Best Shot 2010