As per that Jon Katz guy: he seemed to drop off the earth (well, at least slashdot) all of a sudden. I didn't have him blocked, cause I kinda liked his subjects, and still he disappeared without trace. If I were paranoidically inclined, I'd suspect a slashdot editor cover-up, they probably buried the body in the backyard under sheets of unused VA Linux call options, but really I can't be arsed to care.
I say I liked his stuff, but that'd be except for the "post-columbine world" and "the Net" nonsense. Oh, and his seemingly endless "quest to install linux" which was perhaps the worst tech writing/whining since Jerry Pournelle's monthly never-ending-stories on installing windows mouse drivers and shit like that in (the now defunct?) Byte magazine. Oh, and his movie reviews, which always had to tie in to columbine again and the net.
Anyhow, I googled for Katz once, and it seems now he is writing about dogs.