Windows/Mac OS X: Parts Flickr and Wikipedia, photo site and desktop application Fotopedia lets users create and upload topic-driven collaborative web albums complete with Google Maps information, Wikipedia entries, tagging and more.
Fotopedia's desktop application helps you create and share your photo albums with friends. You can also upload photos from your desktop to the Fotopedia site, turning them into a slideshow web album complete with an associated Wikipedia entry and Google Maps information. Once there, you can browse other albums by topic (e.g., geography and travel), add relevant photos licensed under Creative Commons on Flickr, and follow other Fotopedia users. If you don't think a specific photo should be included as part of an album, click on the thumbs down icon to rate it accordingly.
Fotopedia also allows posting your albums to Twitter, Flickr, and Facebook.