According to Ted Mico with Interscope Geffen -- part of the Unversal Music Group family -- the pop princess' music videos account for a quarter of Vevo's total traffic. That staggering statistic was recently revealed by the executive at the Digial Music East conference.
While quite remarkable, there does appear to be a self-explanatory reason for this rhyme. CNET writes that, "each time someone searches for a Lada Gaga clip on YouTube, they are sent to a Vevo Web page," and it does appear that if you search for and select an official Lady Gaga clip, you're served Vevo's version of the music video.
Without knowing how much traffic YouTube sends to Vevo it's hard to say whether or not Vevo's mind-blowing traffic data is all just smoke in mirrors (they're apparently now seeing billions of page views).