I've recently noticed many blogs are using replacement ASCII letters such as Ô for d and É¡ for g and ×— for n. Some of these blogs have high alexa rankings too, and have many pages indexed in Google. Is this a new SEO tactic to bypass Google's duplicate content filters (and thus not be penalized)? Here is an example of an ASCII replacement blog I am talking about: http://www.rememberingwhoweare.com/ Notice the weird letters.