The basis of the question was to see what type of materiel I would want to use to spark the interest of investors. or what kind of materiel I should use to conduct my investor seminars I am currently am not an investor but I am learning through the book "Millionaire Real Estate Investor" by Gary Keller and use that book as a spring board for my seminar presentations, but that is geared toward new investors. 

Sorry for all the questions at once, but my interest is sparked.

For now, the original question still stands... what does it take to spark interest for private money folks? 

It sparked a fire inside me that I don't think will ever go out.

It does spark the eye of my clients.  

Or atleast they'll educate me enough to learn how to organize my questions into something meaningful.

What first sparked your interest to get into real estate?

With single family properties, the property is either 100% occupied or 100% vacant so a meaningful vacancy rate is harder to determine.

When you don't know what you don't know, you can get yourself into big trouble.No one is going to be able to give you any kind of meaningful estimate based on the pictures.

This is what sparked my interest in real estate investing in this area.