LightWare Optoelectronics is a partner of the ArduPilot project and we are therefore listed on this site. We have our own online store that logs tons of statistics about visitors to our site, such as where they jumped from to get to our site. I was amazed to see that ardupilot.org is now ranked first as the most popular third party origin site. Incredibly, we get ten times more hits from ardupilot.org than we do from diydrones.com and also more hits than we get from online advertising.
For companies working in the drone sector I can strongly recommend ArduPilot as an important source of online customers. Well done team, you rock!