If "Nearest Tube" told me where the closest TV set was I would buy it in a second.
I agree. Tivo is not a patent troll. They invented something new and unique. The others copied it. If the other posters have ever created something unique and had someone take it they would know how the people at Tivo feel.
When I first skimmed this item I saw "classified" and thought "top secret". The government is using Craiglist? A "classified" version of Craigslist? Then the duh moment...um classified ads.
All constants are variables.