If you’ve never heard of Dave Farber, you owe it to yourself to check out his Interesting People (IP) mailing list. Dave covers a broad range of technology topics, many focused on personal liberties in the digital world. While most days you’ll get no more than five messages, on busy days, you can get up to four times that. It’s post-only, though he can and does forward on some of the more interesting, insightful, and substantive replies he receives.