I've doing pretty much the same thing with http://wappalyzer.com http://wappalyzer.com the last couple of years. It's a Firefox add-on that analyzes source code

I've doing pretty much the same thing with http://wappalyzer.com http://wappalyzer.com the last couple of years. It's a Firefox add-on that analyzes source code and headers to find out what software is being used on sites. The add-on is mildly popular and I'm collecting a ton of data but it isn't making me a lot of money. It's a fun side-project though, perhaps we can do something together? Example stats page: http://wappalyzer.com/stats/app/WordPress|Drupal|Joomla/websites http://wappalyzer.com/stats/app/WordPress|Drupal|Joomla/webs...