My instinct is to avoid them:
The English teacher who shrugs
When the sixteen year old is not Frost or Dickinson
Who can not see the beauty of either the effort or the interest,
The critic who has never penned a line
Other than that of criticism,
The editor who can find nothing good to say of a failed piece,
The parent who will say:
'You will never make any money with that stuff' - though probably true -
Fails to understand poetry is the thing that helps see us through
A land that is a killer of poets.
Bill Grace
http://www.poemhunter.com/poem/a-killer-of-poets/