I assume they have a cron job running to keep the site alive - Google App Engine for Java has a nasty habit of putting your app to sleep and then it takes 20 or

I assume they have a cron job running to keep the site alive - Google App Engine for Java has a nasty habit of putting your app to sleep and then it takes 20 or 30 seconds to wake it up (at least that's what happens with JRuby - I don't know about Clojure).