Only professional web sites and mature that are online and have many users.
Allow for open content
- flickr - free membership (3 photosets, 20MB/month). See also flickr graph
- ourmedia - in collaboration with the internet archive, video also
- care2 - use the Gallery2 free software.
- pictiger - Quick hassle free uploader with no registration. Provides links with thumbnails for use in forums.
Does not allow for open content
- fotothing - free membership (5 pictures/day of < 2MB)
- photoblog -
- coppermine not yet an online service but the software used to run such a service (must be moved elsewhere in the future, not deleted!)
- Forum hosting sites (What are the best free online)
- Video sharing sites (What are the best free online)
- Photo publishing (What are the main free software for)