The U.S. Congress' interest in probing Facebook's and Google's privacy practices keeps growing.
On Friday, a House of Representatives committee responsible for writing some electronic privacy laws sent a letter to Facebook CEO Mark Zuckerberg asking for details on when the company shared user data "without the knowledge of the account holders."
The letter, written by Democratic chairman John Conyers of Michigan, suggests that the committee will eventually hold hearings on whether the Internet's second most popular site has--at least in the minds of a handful of politicians--acted responsibly in disclosing its data-sharing practices to its users.
Last week, Zuckerbergat the company's Palo Alto, Calif., headquarters to announce what he called a "simpler" and more streamlined way for users to protect their privacy.
Conyers also asked Google CEO Eric Schmidt for details on how its Street View cars accidentally intercepted some Wi-Fi transmissions.
That letter asks Google to "retain the data collected by its Street View cars, as well as any records related to the collection of such data, until such time as review of this matter is complete."
Three House members, including the chairman of a different committee,last week also asking for questions; Conyers' letter appears to be an effort to emphasize that his committee also has plans to look into the topic.
Update 11 a.m. PT Tuesday: I heard back near-simultaneously from representatives for Facebook and Google. Facebook said in a statement: "We appreciate Chairman Conyers' interest in our personalization products and look forward to meeting with his staff to explain our industry-leading privacy practices and the powerful privacy tools we began rolling out last week." Google's was: "We're working with the relevant authorities to answer their questions and concerns."
Disclosure: McCullagh is married to a Google employee not involved in Street View.