Why Write Letters?
Letters are an excellent means to communicate, educate and convince a large group of people.  Well written letters that follow this guide have a great chance of being published.
 
Be Brief
Try to make your point in as few words as possible, don’t use 100 when you can use 10. The shorter the letter the more likely it will be published, the more likely it will be read, and as a result it will be significantly more effective.
 
Stick to the Point
Letters should make no more than two points.  Sometimes it is tempting to try to put as many words as you can into a short letter.  Letters that clearly the point mean that the reader is more likely to remember and repeat the point you want to make. Too much information drowns out the message.
 
Mind Your Manners
While you may be fuming mad about something you have read in the paper, do not make personal attacks.  Don’t say something in print that you couldn’t say to someone’s face.  Writing a letter to a newspaper is a public act. Since it is done on the record, it is important that you stand behind what you say.
 
Stick to the Facts
Make sure that you can back up any claims you make with facts.  Be prepared to have references ready if you are asked to back up the claim.  You increase your credibility and sound like more of an authority when you quote from and reference, published works on the subject.  It shows that you can defend what you say.
 
Seek to Inform
Tell the readers something new! Try to educate the readership.  People want to read something they didn’t know before, something interesting or perhaps unexpected.  This will generate a reaction that may help bring about change.  Spread information that is easily understood, and can be remembered and repeated.
 
STYLE
Try to be objective, avoid “I” unless you are telling a story.  
Be simple and to the point.  State your opinion instead of saying “in my opinion”
Be positive.  We are spreading the solution.