MILE.fm
What was initially my first experiment as an AJAX-driven web appliaction, MILE.fm (originally squaremileweb.com) has turned into my most ambitious project to date. Originally using all javascript I created, MILE.fm has since evolved into using the jQuery javascript library.
As an image bookmarking and sharing site, it allows users to place images in a space measuring one square mile, at 72 dots per inch. Users can tag or comment on images, search for images based on keywords, move images around, and vote for their favorites.