Yes tumblr is nice....
I use it to post free pics from my sites...
Then follow blogs that have interest in my niches.
The first 500 follows got me around 200 followers in return.
They reblog my pics; add comments; etc....
At a certain point your followers do the work for you...
free traffic...
growing... very easy...
Bondage is a perfect nice to promote there...
Anyone want to start some bondage blogs?
Sign up at Struggle4Bucks and make some money