In a recent program, I spoke of the need to write in a more understandable manner. The objective is not to confuse the hell out of your readers but to make them understand what you are trying to say.
The Fog Index is a matrix that gives you an idea of how easy or otherwise your written matter is for others to read. It was devised many years ago by Robert Gunning, an American businessman.
Whether you use the Fog index or not, do read your written matter from the point of view of your reader. Would most people find it easy to understand? Are you being more verbose than necessary? Is there excessive use of needless jargon? Are you using simpler words to convey your thoughts and ideas?