I've been getting a lot of new followers within the last couple of weeks yet, I'm not getting any notifications in "notifications" nor any email notifications (and that is a setting I have). When I went to visit some of these new followers - a lot of them are from different countries and some obviously blogs that are selling things. I am curious what might be happening. I also got a lot of 'likes' for a post that was not a post but a picture from a post that I'd put up in June of 2012. Could my site be hacked?