So everyone talks about RG being superior due to its annotation. (true) But doesn't this identify that 80% of it's traffic comes from "m-low dogg gangsta money freaks and junk lyrics" searches? So at maximum, 20% of users use annotation features (surely some still use it for purely lyrics simply due to it being it easy to remember)
That's ignoring the presumably large contingent of users including myself and other commenters here who use Google as a direct line to search Rapgenius, like "Rapgenius Kendrick Lamar swimming pools," as it's faster than going to Rapgenius itself.
You could get more accurate numbers by looking at at percent of search traffic to Rapgenius does not include the keyword "Rapgenius" (though you can't do that anymore since google now scrubs SERP referrers).
