Add in the deception and harm to sellers, and I believe the unlicensed brokers make a good case to stop this garbage.

Not only does that put you at risk of wasting massive amounts of time, but you may end up being known as the buyer that doesn't close, which could harm your ability to see other deals earlier than other investors.

However, I consider myself really lucky that neither she nor her "friends" actually did me any physical harm. 

@Zachary Myers How hard is it to use those liquid leveling substances?

For example:I found a property on the MLS in Garland, TX with the following information and analysis (it is under contract now, so no harm in sharing):- I would plan to fully furnish this and offer house keeping too

We don’t know any PMCs to recommend in the Miami area, but since selecting the wrong PMC is usually more harmful than selecting a bad tenant, you might want to read our series about “How to Screen a PMC Better than a Tenant”:https://www.biggerpockets.com/member-blogs/3094/91877-how-to-screen-a-pmc-better-than-a-tenant-part-1-services-and-processesWe recommend you get management contracts from several PMCs and compare the services they cover and, more importantly, what they each DO NOT cover.

May be Zillow's issue, may be issues downstream.Those who fight the Zillow's of the world will be harmed in the fight, just as the record industry and countless other industries have been in the past.

There is also a very real chance of violence when dealing with someone who is mentally unstable and abusing substances.

If that is his need what harm is there? 

Little difficult to make it on weekdays but no harm in trying.Thanks for organizing this meetup.