I would go looking at public records of failed companies. One way to get really detailed information would be to call the former owners of these defunct companies or their underings and possibly even pay them for there analysis of what happened and what they would do differently. You could contact angel investors and all other investment groups like them, which usually have more failures than successes so they might be a good source and tell them that you would be willing to share your finding with them to help them know who and what to stay away from. Call me if you want more thought on this, thanks...Ken Queen