Google CEO apparently has a total disregard for your privacy:
... have long desired the ability to cross reference the Mac address of a user's connection with their real identity and virtual identity, such as their Gmail or Facebook account.
... Google CEO Eric Schmidt recently said internet users shouldn't worry about privacy unless they have something to hide.
Here is a related article about Street View and how Google has appointed a "director of privacy" (a bit late I think) regarding after
Google announced that it had accidentally collected passwords, e-mails and other personal information from random Wi-Fi users while working on its Street View feature.They go on to say
said employees will get enhanced privacy training during orientation, and starting in December, all employees will be required to take part in a security-awareness program.Also a bit late I think, they have been required to have Privacy and Security Training since 2003.
CNN.com has a collection of articles on this topic here