I added in the home page the widget to allow people to sign in my web log. I saw that a user has subscribed in my blog, but I have all reasons to think that he is a spammer. There is a way to block his e mail address?
I’m sorry but there is no way to remove an email subscriber. Even if we could remove them they could subscribe again. Also note that anyone can simply subscribe to the RSS feed http://otnphotos.wordpress.com/feed/ and you would not even be aware of it.