The Andreessen Horowitz-backed company is testing a tool that will let you annotate any page on the web.
When Marc Andreessen launched the Netscape web browser back in 1994, he inadvertently laid the foundation for what would later become the lyric annotation platform Rap Genius, and eventually, Genius. "Only a handful of people know that the big missing feature from the web browser—the feature that was supposed to be in from the start but didn't make it—is the ability to annotate any page on the Internet with commentary and additional information," he wrote in a blog post back in 2012, when Andreessen Horowitz first invested in Genius. Now, Genius is making Andreessen's vision a reality by allowing users to annotate any page on the Internet.