Downsides: The only potential downsides that I'm aware of besides the fees are that if I ever wanted to sell just 1 or 2 properties, when those sales close, the proceeds go towards the outstanding principal balance on the loan (I don't get the cash). 

I don't know if they have any outstanding balances with the electricity and gas companies (as it's an owner-occupied duplex, I can't join the landlord program on either of those utility companies).

The properties that profit the highest are really really cool or do outstanding amenities and design.

To cashflow you really have to be one of the most outstanding premium properties in an area that is a worldwide trendsetter for outstanding properties.  

@Leigh Ann SmithGet a copy of the contract you'll be signing so you'll know in advance if you're allowed to object to certain title issues, including outstanding liens.

Hi guys - you are right that Central Pa and especially Lancaster have outstanding economic fundamentals.

The AIO automatically bills the borrower the interest and adds it to the outstanding balance due on the 20th or 21st of the following month so that means your balance has been paying day for nearly 50 days before anything is being added except for maybe bills or other checks you might write out of the AIO.2) investors just write a check or issue a wire request like any other line and funds will go into escrow when the investor finds a deal.

Id recommend you to add a few amenities and outstanding pictures so you can set your self apart from all the other listings in the area.

There are fleet trucks (verizon, etc.) that are being unloaded by those companies and have been on a maintenance schedule. 

I hope all of this makes sense. ...i understand we love to hear ourselves talk but i think you're missing my point. actually you may be missing several of them.first and foremost you're not gonna give me $50,000.according to the amortization table, you ARE going to pay off that loan according to schedule or else. whether it comes out of your pocket or your tenant's is immaterial to your outstanding loan balance.the portion of your mortgage payment that is interest is tax deductible. your write offs decrease every month as the principle portion gradually decreases for the life of the loan. people either move or refinance every 7 years so the write offs can reset on a new loan... but how's that going for the folks moving from a %3 loan to a %7+ loan today?