"Due to the high number of individuals whose online privacy is affected by tools like this -- either directly or indirectly --- we feel that these claims warrant the commission's review of Google's public disclosure of personal information of consumers through Google Buzz," said the letter, organized by Representative John Barrow, a Georgia Democrat.
In the original public version of Buzz, launched in February, the program compiled a list of the Gmail contacts the users most frequently e-mailed or chatted with and automatically started following those people. Those lists were made public, giving strangers access to the contacts of Buzz users.
There were a flurry of complaints from Gmail users, and Google made changes to Buzz within a couple of days. Asked for a response to the letter, a Google spokeswoman said user transparency and control are important to the company. "When we realized that we'd unintentionally made many of our users unhappy, we moved quickly to make significant product improvements to address their concerns," she said, repeating Google's past statements on Buzz. "Our door is always open to discuss additional ways to improve our products and services moving forward. "