Flickr

Flickr was one of the first photo sharing sites.It was launched in February 2004.The service is widely used by bloggers as a photo repository.It is easy to use and has many tools for serious users and casual users.It also has a search engine for people who just want to browse through the pictures.

Whoophy

Whoophy is another photo sharing site.The opening page has a map which shows how many pictures their is from each country but comparing this site to flickr it is more difficult to use and is less appealing.it also has a news section and a forum for members of the site.Whoophy has no tools unlike flickr.