i used to pin a lot on contributor boards, but after a while i got tired of all the spammers and in a board you have 100k followers and i get more traffic from my personal board which have 6k followers. so, i am opening contributors boards, which will start with min. of 6k followers, those followers are real, no bots. each boards will have a max. of 20 contributor, i will make sure to have no spam on them those boards will gain around 100 new followers per week. the only rule is, dont trade those boards. invites are free, check my sigu for my skype.