If you are trying your hand at generating your own media releases you could try this useful tool;
http://www.pressreleasegrader.com/
“HubSpot’s Press Release Grader evaluates your press release and provides a marketing effectiveness score. This score is based upon basic factors from public relations experts including the language and content of the release, plus advanced factors from Internet marketing experts such as links and search engine optimization characteristics.”
from Heather Smith ~ MYOB Certified Consultant