The Kentucky Attorneys' Advertising Commission apparently has taken the position that every post on a lawyer's blog constitutes an advertisement, requiring the lawyer to submit a copy of the post to the Commission along with a $50 filing fee. See
Ben Cowgill's Legal Ethics Blog,
Evan Schaeffer's Legal Underground,
Dennis Kennedy in Between Lawyers, and
David Giacalone in f/k/a.
Eugene Volokh says it's "surely unconstitutional."