Mac OS X processes explained

Discovered today: Very nice if you have a question about one of those mysterious processes that run on your Mac. Such as: Why is "AirPort Base Station" running on my desktop machine, even though that machine is not equipped with Wi-Fi/AirPort and, in fact, there is no AirPort base station in the entire household?

Anyway, you can also upload a text file created with ps -A and let the website "explain" the processes to you. Upload here.