Back in 1999, Carlos was watching an episode of Nova on PBS about the SETI project, which involves the network of radio telescopes in New Mexico that is listening for signs of life in the universe. There are apparently billions of signals and sources of noise out there, but, according to the show, there are 37 signals that remain unexplained. When Carlos told us about that, we all thought it was a really cool idea, so we named the company after that. And, as it turns out, the domain name was also available.Jason Fried.