Windows PC users are subject to an average of 28 electronic spies on their computer, the BBC reports:

The average computer is packed with hidden software that can secretly spy on online habits, a study has found.
The US net provider EarthLink said it uncovered an average of 28 spyware programs on each PC scanned during the first three months of the year.

Two options: be super diligent about what’s installed on your pc | use a mac.