Heck, I was accused of giving terrible advice when I posted it in a thread in which the landlord was being given instruction by the tenant as to when the landlord could access her property!  

Again, that is a might because I don't know exactly what will happen or if it's worth it for the accuser if you ever get sued.Bottom line, if this is really important to you, I'd get a lawyer's opinion.

That is where accusations of immoral, or karma, or it will hurt your business come from.  

The two individuals had built a makeshift wall in the living room and accused us of building it and renting the apartment as a "rooming house" which it was not and never has been.

He also helped a relative of my boss in an 'entertaining' situation - border and immigration lost documentation of one of the guy's H1B renewals, and accused him of having worked illegally in the US.

If reported, the burden of proof is on the accused to PROVE they are not attempting to broker real estate without a license. 

Which basically means that there must be some sort of internal hearing process where the accused person has the right to defend her actions.

The worst thing they can say is no.I've received my share of yellow letters, and the one that stood out the most was one where they all but accused me of not being around so they could contact me.

I don't think he is accusing me, but I'm sure he wondered.

Lee, don't bring your strong accusations here.