Brooklyn rapper Mr. Muthafuckin' eXquire has signed with Universal Republic , Billboard has learned and confirmed with the label. The news came on the heels of a SXSW 2012 panel eXquire participated on Wednesday (March 14), "The Importance of Online Video & Social Media," a topic in which the rapper is quite well-versed. Since posting his $400 video for "Huzzah" on YouTube last spring, eXquire ignited the attention of the Underground Hip-Hop community and the Indie blog circuit alike, making Pitchfork 's year-end list and attracting interest from rappers like Danny Brown and Das Racist , who guested on a remix of "Huzzah." - Andrew Hampp (Billboard) In November of last year, as the rapper's success began to rise, Mr. Muthafuckin' eXquire took to his Tumblr to share a few words: "What [an] ill fuckin' journey this year has been for me! When that New Year's Ball dropped, I would have never thought I'd be on...