MySpace at http://www.myspace.com/ is an online community allowing members to create profiles, post pics, maintain blogs, and build networks of links to other friends and members. MySpace claims to contain over 5,000,000 profiles.
Mobog at http://www.mobog.com/ enables anyone with a mobile phone-camera to instantly display their photos on Mobog.com or on their own site. Pictures are sent via e-mail, the subject of which becomes the caption.
Both sites appear to be powered by ColdFusion 5 (the former is using Fusebox). Oh, and both sites contain some risqué content, so browse with caution.