I noticed today that my blog was being followed by someone using the name Gerry McCann and a photograph of Maddy in their profile.
The actual name being used was the fairly suspicious looking Gérry MCcann Operación Task Máfia Organizadas so I clicked on the user profile and found a few hundred words of Spanish (or was it Portuguese?) - two moments later and Google translate confirmed what I feared: this is an obnoxious person with lots of horrible things to say about the McCanns. I put the name into Google and found that this has been added to a lot of blogs and websites.
Blogger makes it fairly easy to block followers.