title: Compare string similarity
body: <p>What is the best way to compare two strings to see how similar they are?</p>
  <p>Examples:</p>
  <pre><code>My String
  My String With Extra Words
  </code></pre>
  <p>Or</p>
  <pre><code>My String
  My Slightly Different String
  </code></pre>
  <p>What I am looking for is to determine how similar the first and second string in each pair is. I would like to score the comparison and if the strings are similar enough, I would consider them a matching pair.</p>
  <p>Is there a good way to do this in C#?</p>