Wow, I guess my e-mail service is better than I thought. I haven't gotten anything.
The email we got was just a notification for Pinterest that we were mentioned in a post by someone. The email itself wasn't spam--but what this person posted was.
I didn't report it, but I will now. I also noticed it was from some random person who started to follow me who have some questionable boards. I hope Pinterest finds a way to block people from following you soon.
I've gotten them too and thought they were weird because it said they mentioned me, but when I go to the post my name isn't mentioned. Good idea about reporting it to Pinterest. People are going to find ways to spam. You can change your settings for what Pinterest emails you. I stopped getting emails about things people repin of mine, was getting to be way too much.