I have read the entire post & replies, indeed interesting and fruitful discussion.I have to say my opinion is very like @Cody L.The most important advantage you have when you invest in real estate is the leverage (and I am investing also in different segments such as stock market for example).You almost don't have any other investment segments in which you can leverage yourself, and use this "additional money" to increase your portfolio and income.And here is a thing I learned from one of the greatest investors I once meet - The idea in real estate investment is not to invest your 100% cash.

There is a process to consistently find reliable tenants, based on segment housing requirements.Every tenant segment has specific housing requirements and they will only rent properties that match all of their requirements.

This should be segmented into a few categories, first one being Limit of the Umbrella, $1M, $5M, $10M? 

It's hard to stand out.There are some owner-occupied segments with people who share motivating factors for selling their home.Seniors with Long-time Ownership: often ready to downsize or transition to assistance.Homeowners with Low Financial Stability Scores (FSS): Struggling financially and likely ready to cash in on their asset.Both these categories have additional advantages in that they probably don’t haven’t been updated and may have deferred maintenance.

It's hard to stand out.There are some owner-occupied segments with people who share motivating factors for selling their home.Seniors with Long-time Ownership: often ready to downsize or transition to assistance.Homeowners with Low Financial Stability Scores (FSS): Struggling financially and likely ready to cash in on their asset.Both these categories have additional advantages in that they probably don’t haven’t been updated and may have deferred maintenance.

Is there a segment of the market that you believe still has good opportunity?

I suggest you use the mail > call > knock technique and build campaign(s) around a sequence of contact points after segmenting your lists. 

Though we've done alot of real estate over the years, and do new construction, what you do can be helpful in learning a whole new segment of the market.

Account Closed Thank you - actually the divorce mailings is just a small segment of mailers we are sending as part of an aggressive campaign since the short sale and REO market is pretty over saturated in our market.

I'm not going to say "no contractor posts on BP" due to bad experiences with a certain percentage of the segment.