Jan. 18, 2012 was a big day for supporters of Internet freedom.
So what changed these politicians minds about the Stop Online Piracy Act and its Senate equivalent, the Protect IP Act? And what got other lawmakers -- who had previously said nothing about the two bills -- to suddenly come out against them?
The graphic below shows the number of Congressional lawmakers who supported and opposed the two bills before and after January 18. It also looks at the Twitter traffic the topic generated.
Disclosure: AOL, The Huffington Post's parent company, is among the companies lobbying against SOPA and PIPA.