If anyone is guilty of overusing screenshots it's me.  They are easy to generate, painless to upload and I use them with a vengeance in emails, on web pages, in forum posts and now on StackExchange. 

What is the general consensus regarding using screen shots in drupal.SE questions and answers?  

Specifically when would it be most appropriate to include a screenshot, and when should they be avoided?

![An obvious misuse of the photo upload feature...][1]



  [1]: https://i.sstatic.net/eq2ry.png