YP Mobile Ad Revenue Approaches $400M, Total Rev Nearly $1B

YP, one of the largest U.S. local ad platform, had nearly $400 million in mobile search revenue in 2013, making it the number three company in the U.S. mobile advertising industry after Google and Twitter, according to analyst firm IDC.

Overall, YP digital revenue reached nearly $1 billion in 2013.

“YP continues to b…