So true! However, the tool lots solid but to me, it's worthless to market without following users. :updown:
I would say it's worthless to follow users if they have no interest in what your promoting.
Personally I would target based on keywords. For example, say I wanted to promote a MFA site that targeted weight loss, I would make a 100 accounts and have them all make new pins and repin based on keywords related to weight loss (using PiiBot of course).
Then when some one repins or follows or comments I know they are interested in weight loss and more likely to click the link to my site vs just randomly following people hoping they care.
People on pinterest will follow accounts even if they don't follow back (I have accounts that get followed that have never followed any one).
Having people repin your pins and therefor your links is far more important than having followers.
Pins/Repins = Traffic.
But at the end of the day, do what works for you.