In order to answer that question, one would need a better understanding of the strategy you intend to employ in your Buy and Hold business.

For me personally, are there any moral strategies that one can employ to use something like this to my advantage? 

Also, you need a combination of paid marketing and self-generated marketing in your business.  

However, since a two-family house is technically "investment" property, you should also take into consideration the revenue it is generating, and a rental income and expense statement should be provided to potential Buyers.

To date we have generated $20M+ from that five hundred without incurring equity or debt.Here is my unsolicited advice and hope I don't sound like your father (not really):Do not barrow a dime.  

Please see quick math here for a $10K down payment ( 5% IR, 1% PMI, 900/annual taxes, $0 HOA)Mortgage/Tax/PMI/Insurance: $690/monthCapex (20% of payment): $150Vacancy (10% of payment): $75Management: $130With $1300 in rental income this generates at least $255 a month - better if I increase my downpayment.Here is zillow link: http://www.zillow.com/homedetails/14818-Astrolyn-St-Winter-Garden-FL-34787/82077144_zpid/I'm interested in these low income properties so i'm curious what you think of this deal.

Just not in the curriculum in the school system.So I try to help some  with financial and even soft skills or they may not get employed or able to save money.It seems they are ok in the basement until they meet someone, then we have classic "family formation" driving the home buying.

Watching the interview of @Brandon Turner with Brian Burke who comments he survived to the crisis in 2008 because he just a flipper made me think about the risky side of REI.Lets say someone is good at REI and buy 8 properties  which generates 400$ dollars per month after all expenses.

Population growth vs decline, employment rate, crime rate trends in property values.

Do you use something like list source or something similar to generate leads?