FreeBSD, enterprise open source stuff, network and system security. I wouldn't call myself an expert software developer these days, but I've been using PHP since 1995 and can find the bathroom on my own. Bourne shell and awk since the 1980s. My name here was my UUCP pathalias name, and is my nick on Freenode if you want to reach me there.
Oh, and #SOreadytohelp . :)