title: Extension Methods vs Static Utility Class
body: <p>I'm looking for some pros and cons for using extension methods over static utility classes in a C# app.</p>
  
  <p>For instance, a plus in the extension methods column is the convinience of calling by the class name rather than something like "StringUtils". But a con would be that it can blur the lines between what is in the framework and what isn't.</p>