I am not sure which way this will go, but WPE's website was using the word "WordPress" in every possible way before they 'cleaned it up' a few days ago. I am not sure whether it was trademark infringement, but they did seem to be leaning heavily on the trademarked term. I compared WPE's website to Dreamhost's (as I am familiar with the latter as a provider of hosting for WordPress-based websites), and the latter used the term far more sparingly.