Since a couple of people seem to have liked the Analogy Library idea I thought I'd try and build a prototype. So I reached for tumblr, the papers and glue of the internet, and made analogylibrary.tumblr.com. All it does is aggregate things that are tagged analogylibrary on delicious or flickr. So if you see half an analogy somewhere please tag away. That seems like enough really. I guess you could add more sophisticated things at some point, but let's see if anyone uses it first.