I find Pinterest very impersonal. It's a lot like looking up photos on Google Images. Yes, you do have to set up an account with your Email. And, use a username. You can set up your account to be as private as you want.
Truthfully, I "pin" like there's no tomorrow. But, very rarely (meaning, if ever) do I look for someone's personal info. (I am usually on a mission looking for ideas.) I don't post any of my photos there. Although, I have seen a few of mine on there. (That doesn't bother me. I'm flattered that they liked something I've made.) Plus, I'm not a designer and I do not sell anything online or off.
For me, it's a great place for me to find great ideas on just about ANYTHING!! My daughter turned me onto Pinterest prior to the birth of my first Grandchild.
I hope you'll look it up and see if it's a good place for you to visit.