This is a great "how to" piece about getting yourself or your company up on Wikipedia. It is tough love but well worth a quick read if you've always wondered "why are they there?"
If you want to create an entry about a company (or any topic related to your business), you need to understand what Wikipedia is looking for and the right way to go about it. This post describes the process at a high level, but it’s only a starting point – follow the links within to learn more before you try.
