Was there something specific about the page that you had a critique on?
> Last week 6,033 companies signed up for Basecamp to manage their projects. Today it’s your turn.
This is not a description of what Basecamp is.
> For all of my projects, I use Basecamp to keep track of every file, discussion, and event from beginning to end—all in one place.
This pretends to describe Basecamp but I could also use it as a description for Dropbox, MediaWiki, and Eventbrite (seriously, what the hell is an event?).
> 97% of customers recommend Basecamp.
COLOR ME IMPRESSED!
To quote myself: I want something concrete like "Basecamp lets you write words, puts checkboxes next to them, then moves them around randomly" (I'm not a fan of the product so my summarization may be biased).
That's great that you think that, but (and don't take this the wrong way), it's irrelevant. I'm fairly sure 37signals tests their design/copy/layouts and if this one wasn't working to make them more money, they'd tweak it as necessary.
Do you honestly think the Basecamp homepage communicates what it is? As stated earlier, the description could apply just as well to Dropbox, MediaWiki, or Eventbrite.