What percentage of a woman's friends on her Facebook are 'backups'? , or simply just guys that like every pic they post or leave doofy little comments, like "Wow, looks good" and things like that. I find it hard to believe that someone can maintain regular contact with some 1200+ people, even the lower friends lists with 500+ people.

I see that on hot girls FB's, and think that at least 90% of the guys there are just to blow up that like bar or as potential backups. Anybody have some redpilled statistics to back this up? or articles regarding this?