yeah I sometimes used those bot you mentioned above. In my case, I had some upvotes in korean community after I got 1000SP but I still can't have enough votes in usual community. Maybe it is caused that I don't have enough foreign followers... haha. So I try to interact some foreigners day after day. Actually that was my most important goal. I don't have enough chance to meet foreigners in Korea so Steemit is awesome place for me haha. Thank you for understanding what I meant.