Do you do this full-time?
No.
From January 1997 to January 2000, I worked on xav.com part time.
From January 2000 to February 2004, I was self-employed full time. Much of that time was spent doing support for the scripts, but I also did some consulting and other things.
As of February 2004, I have worked a day job doing Perl CGI development. I maintain xav.com in my spare time.
"Do you do this full-time?"
http://www.xav.com/scripts/misc/1007.html