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 (http://www.xenolth.biz ). Presently, there's only one project there (an open-source <a href="http://www.xenolth.biz">guestmap</a > written in PHP), but some TCL/TK scripts are under way!