I absolutely LOVE Ninja Pinner for three reasons:
It allowed me to test and figure how to get an insane number of new followers (200 ish in one day) without doing anything at all spammy.
It allows me to quickly find cool pins that are highly relevant to my posts and repin them effortlessly.
It allows me to tag repined posts with my own tags included and even links to relevant pages/pin to the repined pin (tongue twister there - another trick I learned)
I can set and forget while Ninjapinner gets me tons of followers and clicks to me website while I do other tasks or sleep!
Love it - thanks Ninja Pinner