If you wonder where Topic Maps folks are today, you will find some of them, including Jack making the keynote, in Leipzig at TMRA'05. Lars Marius Garshol is there of course, and seems to have fun feeding his brand new blog, which is called simply "Larsblog" because he's a guy who loves simplicity. But I'll suggest him a more sexy name.
What about "Beer, Topic Maps and Everything."?