The most popular page is the "most popular gradients" page, and previously I had to grep the server Apache logs, insert into a DB, dump and copy the DB locally, regenerate the whole site and upload. Took an hour, I did that once a week or so. Now it's all done on the site without my intervention a few seconds after every download.

And it's bleeding edge because I wanted to get up-to date on recent Rails improvements :-)

[author BTW]