I'm brand new here, and just read through a topic comparing Drupal to Mambo.
IMHO, I think the chances are fairly slim that Drupal is going to catch up with or overtake Mambo. Regardless of whether or not Drupal might be a superior system, there just doesn't seem to be any chance of that.
And I'm not sure if the developers of Drupal even CARE about the comparison to Mambo.
But I'm not a coder, just a marketing clown.
Having had a great amount of experience with Mambo, I'm a big fan of the CMS. For instance, I suddenly had a real estate client pop out of nowhere - so I threw out the possibility of an integration with Open-Realty, and bam. The solution was already in the works, and I was able to employ it for the project.
So Mambo almost has this "Wal-Mart" sort of thing going for it - you can walk in and find just about anything. And from installation to support, it's almost idiot proof. Being an idiot, I can vouch for that :)
BUT...
Mambo is pretty lame when it comes to Drupal's strong points. Run a Google search for "multi-user blog Mambo" and you're going to arrive here. That's how I got here :)
Anyway, PLEASE feel free to remove this entire thread if I'm just showing my complete ignorance here -
But it looks like, with the "Community Plumbing" monicer, you guys are very aware of Drupal's strengths. And it could just be the idiocy of the lemmings (myself included) that Drupal is even in the same boat with Mambo - as far as "CMS Reviews" and all that.