Alex Albert is a spammer. I bought one product from him in 2007 and I've since unsubscribed from every list he's added me to. He keeps adding me to new lists and now he's added me to a circle (I presume) in Google+. And I'm getting his updates.
The problem is that I can't just unsubscribe from his spam updates. No, when I click on the unsubscribe link, the only options I have are to unsubscribe my address from all Google+ notifications or not. Seems like overkill.