I have come a bit late to this Pinterest thing, and much like Tumblr I'm not sure if I've either quite got the hang of it, or whether it's quite the thing for me. Of the two, Pinterest seems the easiest to fathom, it's just a place where you can assemble collections of images that appeal to you. Tumblr ? This is often referred to as a micro-blogging site, micro-blogging being blogging without going to the effort of actually writing something for yourself as far as I can gather.
Yorkshiresoul's Pinterest , if I keep it up, will be similar to the blog - goth girls, dark art, musicians, sporting stuff and the like. I have grabbed my domain name at Tumblr as well, but I'm not sure if it is of any use.