NBA: The National Basketball Association.
Philipp Lenssen: A person who covers Google from Germany, among other things.
Tony Ruscoe: A person who covers Google from the UK, among other things.
Hula-Hoop: A plaything consisting of a tubular plastic hoop for swinging around the hips. Was used before people had video games.
Blogoscoped: A blog about Google.
Google's Define Operator: Something that can sometimes be kidnapped, as experiments by Zorgloob have shown.
Google Local: Directory of local information
AdSense: Allows webmasters to sell advertising space on their web sites