LEADING THE DAY: Sens. John Kerry (D-Mass.) and John McCain (R-Ariz.) will hold a press conference this afternoon to announce the Commercial Privacy Bill of Rights Act of 2011.

The bill is expected to include measure requiring companies to give consumers the option to opt out of having their data used by third parties. It will not include a do-not-track provision.

House hearing on D-Block: The House subcommittee on Communications and Technology will hear testimony Tuesday on auctioning the D-Block of spectrum. Former U.S. senator and 9/11 commission member Slade Gorton will testify that the spectrum block should be auctioned rather than directly allocated to public safety agencies, the Hill reported.

Bing searches reach 30 percent of market share: The latest numbers from search analysis group Experian Hitwise finds that Bing-powered searches have hit 30 percent marketshare in the United States. Google still leads with about 64.5 percent of marketshare. The study also found that Yahoo Search (powered by Bing) and Bing searches had an 80 percent success rate of searches; Google had a 66 percent success rate. Microsoft’s search engine went live in June 2009.

Facebook case will go on: The Winklevoss twins, who claim Facebook co-founder and CEO Mark Zuckerberg’s stole the idea for the social network from them, will challenge a federal court of appeals panel ruling that upheld their original $65 million settlement with Zuckerberg. On Twitter, Tyler Winklevoss posted a statement from his attorney promising to file for an en banc hearing within 15 days.

The news comes on the same day that Paul Ceglia, who claims that he deserves 50 percent of Facebook, filed a complaint in a Buffalo court with a string of e-mails that appear to confirm his story, Business Insider reported.

Amazon introduces a cheaper Kindle: Amazon introduced a new, cheaper “Kindle with Special Offers” e-reader that will feature ads and sponsored screensavers. The new e-reader will cost $114 — $25 cheaper than Amazon’s current low-price model.