my random guesses for their revenue:<p>- basecamp: $550,000/yr<p>- signal vs noise (jobboard + deck): $200,000/yr<p>- backpack: existing + new customers = $100,000/yr<p>- highrise: $100,000/yr<p>- campfire / writeboard / ta-da list: $75,000/yr<p>- get real book: $75,000, span of its entire publication run<p>37s is at least a 1 mil a year company