Of all the things that Flickr has done, The Commons project might be the most significant. If, in two years, there are tens or even hundreds of thousands of old photographs previously unavailable to the general public from collections all over the world -- all tagged, geocoded, annotated, contextualized, and available to anyone with a web browser -- that would be an amazing resource for exploring our recent history.
...is a weblog about the liberal arts 2.0 edited by Jason Kottke since March 1998 (archives). You can read about me and kottke.org here. If you've got questions, concerns, or interesting links, send them along.