Yep…actually I’ve done a ton of research on other platforms especially Drupal.
It’s like most software – on the surface seems perfect but actually a lot of trade/offs when you start going down the list of what you need.
There are some social networks built on Drupal. But after talking to ton of people, Drupal is not inherently social. Although Drupal 7 coming soon and other releases help it do social better…