I am by no means an expert in TCL/TK. However, I contribute what I can to this Wiki.
In my spare time, I develop open-source software, which I give away on my website. Presently, there's only one project there (an open-source guestmap written in PHP), but some TCL/TK scripts are under way!
My website: <a href=http://www.xenolth.biz>Geographic guestbooks & guestmaps from Xenolth: the #1 open source guestmap!</a>