I would really like to thank you guys, great additions to my list!
Here you go:
sexpin.org
myawesomelinks.com (submit links, but it's more like stumbleupon.com)
zmut.com (put your link in the pin description)
pornopin.me
weluvporn.com
smutty.com
hotfmodels.com (most important xD, but submission is not free because the submited links are seo friendly (dofollow))
porntack.com
pinsexual.com