No, it's a pointless website where people (mostly women) pin pictures of things they like to a board. That is pretty much the extent of it.
I don't have pinterest, but it's links as well as pictures. Meant for inspiration and visual bookmarks. When I am searching for something, I get a lot of hits there for different things. I suppose if you don't use something, it's pointless to you, but that could be said for anything you don't use.
Just had to say... 'Ya read my mind, this was the first thing that popped up into head when I saw the title of this thread, haha.