Listed here are a few pirate-themed blogs that I recommend you follow:

http://potc-screencaps.tumblr.com/
http://potc-gifs.tumblr.com/

And here are a few of my favorite blogs that are frequently my Tumblr “crushes”:

http://torielise.tumblr.com/
http://kass-eh.tumblr.com/
http://voldemortsfreehugservice.tumblr.com/
http://thvampirates.tumblr.com/