Some things are free. Pet of the Day, Dog of the Day, and Cat of the Day come to mind.

   Apache the software that runs most of the websites on the Internet is free. Linux the operating system that Apache often runs on is free. The Free Software Foundation and Project GNU has created tools that the computer industry has used since 1984.

   That said the cost of serving Pet of the Day has risen. I think there will be a day when we will have ads.