I've been contributing to wiki's since 2001. Most of my recent work has been done on the, where I've created something like 1000 technical articles on the topic of (half are just stubs) with something like 12234 edits (last I checked).
I found GM sometime in 2005 and fell in love, before that I was writing filters for Proxomitron. With GM I abandoned Proxomitron once and for all (it was unsupported and closed source, the author had become disinterested and then died).
Essentially I've been modifying webpages since 2001.