Google's software principles basically say "don't screw over the customer". This isn't going to stop spyware bastards from doing their dirty work, but it is nice to see that someone is thinking of trying to start a trend towards making your computing experience safe.
These guidelines are, by necessity, broad. Software creation and distribution are complex and the technology is continuously evolving. As a result, some useful applications may not comply entirely with these principles and some deceptive practices may not be addressed here. This document is only a start, and focuses on the areas of Internet software and advertising. These guidelines need to be continually updated to keep pace with ever-changing technology.