Red State reports at least some Hyatt Hotels use the Uniguest server to provide in-room Internet. Uniguest has blocked conservative sites like Power Line, Instapundit, and Drudge Report while not blocking equivalent liberal sites like DailyKos and Talking Points Memo.
This is the electronic equivalent of preventing the lobby newsstand from selling The Wall Street Journal. If you have this experience in any hotel, please register a complaint with hotel management.