Someone on the drupal site thought it was great news or at least worth mentioning that drupal.org is more popular then youtube.com. Actually the google page rank for drupal.org is 9 and youtube.com's page rank is just 8. Does this mean that drupal is more popular then youtube? I like drupal, don't get me wrong, but have you looked at some traffic stats lately? Why even compare? The sites and projects are totally different, it's like comparing Microsoft Windows to cars 🙂
Pagerank has nothing to do with being “more popular” …in then sense that you probably mean – visits.
Page rank is about how many back links from relevant sites you have. Drupal.org was registered in 2001 and youtube.com in 2005, of course you could get more back links in 6 years then in 2. Maybe drupal is more popular then youtube for those that are into web development or cms …