4.5 million: The number of people, by Wednesday afternoon, that Google said had signed its petition to Congress, according to The New York Times Bits Blog.
334,878: Number of people, as of early Wednesday afternoon, who liked Mark Zuckerberg's anti-SOPA/PIPA status update on Facebook.
75,000: Number of sites Fight the Future, a nonprofit that's helping organize the Web protests, says have signed up to participate in the protest, according to The Los Angeles Times' Technology Blog. The LA Times also reports that Fight the Future says some 350,000 people have sent emails, via the organization's Sopastrike.com and AmericanCensorship.org sites, to their senators and representatives.