TIME WASTER. Do you find yourself constantly checking your mail? Are you sick and tired of responding to the same old requests? Or do you simply get to the end of the day and wonder where all your time has gone? By working a little smarter, you can gain at least an hour a day -- or 15.2 days every single year!
DON'T SELL OUT! So many ezines are basically just one big "buy me" ad - content and care over presentation a mere afterthought. You probably know the type I mean. And, if you've any sense, you'll stick these "sales brochures" right where they belong - in the recycle bin.
CHOOSE YOUR WEAPON. Your ezine needs to focus on one main theme - whatever your reason for publishing. If you have a website, you definitely need an ezine, or at the bare minimum a "keep me updated" list, to complement it. Otherwise, ezines can be based on your hobby or specialist area of knowledge.