What they do well is their analytics. 

Besides hosting my own STR places, I've been building some side data analytics apps to answer these exact type of questions.

I have the data and analytics on the market that show the strong appreciation in the area with cash flowing opportunities.  

Just be careful of not falling for hype and be analytical!

Throw your URL on there and apply Google Analytics to your website to see how many people are actually manually typing in your information.  

I saw an uptick in web traffic using Google analytics, but that's about it.  

We use both 1-800-SELL-FAST and local analytic numbers.

Conversions and cost/conversion are two columns you will want to focus on.CallRail can be used for call tracking and will sync with Google Analytics and Adwords.

@Tyron White: Bigger Pockets has some analytical tools that you can try out - that's where I started.

@Jared Smith offered a marketing message about the strength of investment in PHX and Scottsdale - the comments are more about the need to go further to establish an investment thesis that analytical investors would be compelled by.BTW: I love AZ - half my family lives there.