Recently, we took another important step to improve our privacy practices by announcing a new policy to anonymize our server logs after 18 to 24 months, becoming the first leading search company to publish a data retention policy. We also posted here to explain the factors that guided our decision to retain server log data for 18 to 24 months.

1. Thank you!
2. I'll need to read further and figure out what "anonymize" means.

Official Google Blog: How long should Google remember searches?