A chap registered the domain “authority directory.com” in July of this year, presumably to cash in on Google referring to sites as “authority sites”.

It’s done well and is sitting at the top of the serps – however there’s a glitch! Because the word “authority” is used in general SEO discussions it’s going to be used to refer to many sites and not just this one directory.

So, when a thread starts at digitalpoint titled Authority Directory Banned By Google? there was ambiguity – was the writer referring to the site called authority directory or a directory which is an authority? It turns out it was the latter but you can understand his concern. When it then turns up in the SERPs he asked to have the thread renamed!
A sure case of needing to be careful what you name your site and being aware of how your carefully targetted keywords may be used!