Wikipedia
Fotki is a digital photo sharing, video sharing and media social network website and web service suite; it is one of the world's largest social networking sites. In many ways, the site appears to be similar to the majority of other popular photo sites which support a number of so-called Web 2.0 features, such as use of Ajax, tagging, RSS feeds, social bookmarking, GPS location information and Exif info display.
The service offers unlimited storage space for digital images to Premium (i.e., paid) account holders and also to free account holders from Estonia, Latvia, Lithuania and Russia. It also offers blogging (similar to LiveJournal or Blogger), online printing and selling of prints at custom prices, as well as email and co-branding.
Fotki community tools allow tagging photos and videos, detailed profiling, saving and organizing links (similar to del.icio.us), as well as photo and member search using folksonomic tools.
Fotki is licensing photo-sharing software for many global companies, such as Telecom Italia, Alice.it, Sears, Mark Travel, Vegas.com, Funjet.com etc.
As of January 2011, Fotki claims to have over 1 million 600 thousand registered members from 241 countries and hosts over a billion digital images. It ranks in the 1400s in popularity by Alexa.