This information is similar to debian's popcon: http://popcon.debian.org/ http://popcon.debian.org/, but one advantage popcon has is that it tries to measure ac

This information is similar to debian's popcon: http://popcon.debian.org/ http://popcon.debian.org/, but one advantage popcon has is that it tries to measure actual usage of a tool even after it's installed. This avoids over-counting people who install something and then never or rarely use it. Of course, that's more of a problem with Linux distributions (which tend to install a kitchen sink worth of stuff) than with homebrew (where people probably install a much smaller subset). In any case, it would probably be quite easy for homebrew to collect the same statistic (basically just look at the atimes of installed binaries). [Disclosure: I'm the original author of popcon so I'm biased :)]