Interesting: I just checked the page you provided.  

In those cases, the main criteria we add to our lease is that everyone that comes to stay there must be subject to a background check paid by the company.

You should check out Second Street.

- Can't tell you how many tenant background checks show they are buying lemon cars with 25% "we finance anyone" car loans that are designed to fail. - All they've got to learn is to save some of their income to pay their bills on time and they could then afford to buy a home.Instead, they spend every penny they make on things they don't really need and then blame everyone else.Take a look at a Class C or D tenant's bank statement to see the frivolous things they spend their money on and you'll better understand our society's biggest problem.

Check out Whit B. on Bigger Pockets posts.

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The way I'm looking at it, if my spouse and I only do employer matching for the 10 years we would have more than enough in there and still 10 years out from being able to access it.I do plan on doing 401k loans for deals if the numbers check out, and I've considered rolling over some of our 401ks into roth IRAs to access our contributions but we'd have to pay taxes out of pocket (a big hit to cash flow) and we couldn't touch it for 5 years.  

Here are a few suggestions on how you can maximize the wealth of information available: Check out the blogs and podcasts, or take advantage of the search feature (magnifying glass).

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There was no market data indicating there was a market for $3K 3 BR rentals but that was merely because nobody ever supplied the market with the inventory.