Since he doesn't have the capital, but the skills, this gives him entry into this space and seems low risk for me considering if all goes south, I wouldn't lose much. 

You'll lose a few days rent but ultimately a positive review and future recommendations from the nurse may be more valuable than that.

I can tell you, however, that if you vet a qualified buyer and don’t show him a property because he wouldn’t sign a commission agreement, you stand a much better chance of being sued, and losing.  

Cash flow is mostly a myth and it's all about appreciation unless you convert them to mortgage notes or CFDs but then you lose appreciation.

This is very desirable since you can comfortably live with a girlfriend/dog/whatever, and not lose comfort.Buying a SFH, building rooms, renting every room and sharing your room will almost certainly cashflow in most markets (outside of VHCOL cities).

Sometimes I get so busy helping people buy properties I lose track of time. ;-) 

but generally speaking this is a good list and far better than what we see where folks get snookered by fakes who are being told what they want to hear and risk up front money only to lose it.

Don't touch this unless you can afford to lose the entire loan.

They already caused the harm by losing the 1st deal.

The crazy thing was that we didn’t lose cash flow by doing this because the mortgage pay down reduced more expenses than we lost in income from selling the properties!