Tech entrepreneurs attack SOPA on the eve of markup

The cofounders of some of the Internet's most successful startups have put out a letter condemning the Stop Online Piracy Act. It warns that SOPA will undermine online security, burden future web startups, and "censor the web using techniques similar to those used by China, Malaysia and Iran." The strongly-worded letter is signed by Google's Sergey Brin, Yahoo's Jerry Yang, eBay's Pierre Omidyar