37 Signals, Fog Creek, Mint, can you even be a successful web company without a blog and an audience?
That said I know they have blogs now, largely targeted at developers and early adopters, but in the early days they didn't. However, I'm a big fan of blogs, think every professional/company should have one. Great way to spread ideas, make contacts, etc.
Statistics are always very popular among the press crowd - this can be easily sold and drives additional traffic.
I want to hear the success story from the designers perspective, another from the technical lead, and another from an engineering point-of-view and so on.