Yeah, I spend too much time there. But I often post photos there for convenience, long before I get around to adding them to a gallery on this website.
I often use Pinterest while contemplating a purchase, or trying to decide how to do something. It's just a great way to store links.
I have been a Yelper for a really long time. Long enough that I'm just about out of places to review. But I do post new reviews occasionally!