What are some of the key factors do as a real estate investor look for in an agent

The key issue is what is a win for them. 

For example, you set up key word alerts. http://www.biggerpockets.com/alerts

You'll get a wealth of REI knowledge and learn how to take full advantage of Bigger Pockets (including how to connect with other investors).Listen to the podcasts , get active on the forums & set up key word alerts to be notified when people are discussing topics you're interested in.Check out the webinars, they are very informative, and there’s usually a new one every week. 

For example, you set up key word alerts. http://www.biggerpockets.com/alerts

Key of course is finding the right TK partner or partners, and nothing is more important than the property management component.  

A key indicator is inflation adjusted per capita income over the past few years.

For example, you set up key word alerts. http://www.biggerpockets.com/alerts

When you look at the numbers, what key things do you look for?

If yes, THAT'S when you ask them the key questions:1) What are you looking for - single family homes?