“In Whatsapp’s case, the iTunes URL doesn’t even appear until close to the bottom of the second page of search results, when logged in while searching for ‘Whatsapp iTunes,’ and it’s at the bottom of page 3 when logged out,” Perez reports. “It’s even more difficult to find it using ‘Whatsapp iPhone,’ whether logged in or out.”
Perez reports, “This is but one example, of course. The search penalty, or search bug if that’s the case, doesn’t seem to affect all apps to the same degree. And the rankings also depend on what search terms are used, and whether the user is signed in.”
Read more in the full article here.