Monetizing SFW Tumblr Accounts

I am currently working with 10 Tumblr accounts and gaining about 1000 followers per week. It's not much but okay for me.

But since Tumblr is baing Skylikes/Mylikes links, is it still possible to monetize SAFE-FOR-WORK (no po) Tumblr blogs?

Also, CPA is very risky on Tumblr right? I feel like I won't be able to monetize the followers and everything I am doing is pretty useless.