twitter ads to gain followers cpf is high?
I have been using ads on facebook to gain followers, it works pretty good, I'm paying only 5 cents or less per follower.
I do the same type of targeting on twitter but my cost per follower is 10 times as much, 50 cents per follower or more.
On facebook I just target my audience by gender, age, and interest, and it works.
What works to lower my cost per follower on twitter?