Ken Gould is on Facebook
He tweets every now and then
1. At the moment Ken reads all his email, even the nasty ones (which amuse him.) This may change in the future.
2. Ken attempts to respond to every email (except the nasty ones), but this may also change in the future as the ratio of volume to time becomes inverted. If he doesn't respond to your email, don't take it personally.
3. If your message is already answered in the FAQs (haven't written them yet, though they will soon based on your questions) or on the blog, Ken won't respond. Again, not meant personally.