Word. Unless Drupal has changed in the last year or two (and it might have), the number of queries Drupal issues for any given page is O((u+n)*m), where u is t

Word. Unless Drupal has changed in the last year or two (and it might have), the number of queries Drupal issues for any given page is O((u+n)*m), where u is the number of users being displayed on the page, n is the number of nodes, and m is the number of modules installed. You can cache static pages, but the constant activity of a social network makes that impossible if you're logged in. Basically, if you install even a few modules on Drupal it'll take a big dump all over your database.