I don't take felonies, especially if they are for domestic abuse, violence, burglary, robbery, sexual offences etc. basically anything that might bring harm to my other tenants, my PM (wife), or anyone else.

No harm in letting the seller know you are out there. 

A pension they cannot reply, crime, and even more squeezing of the poor and middle class.High taxes, high regulation, not business friendly, federally mandated minimum wage, etc. are all things which harm and de-incentivise the poor and middle class.

Another great rule of marketing is 'first do no harm'. 

My best prospective tenant for the upper unit has felony from 10 years ago for possession of controlled substance. 

Is that what you are saying, I wrote a public statement that was NOT harmful, racist or demeaning, but I need to be careful with what I post?

There's no harm in calling it a bedroom, but I'd be extremely upfront about it otherwise it's just misleading as you said.I did a quick google search and seems like most sites say min size is 70 SF.Here is a blog from @Mark Ainley company GC.   

Tons of substance abuse issues are cropping up.

Self-help, to the extent they can and won't harm their case, is also encouraged. 

Threatening tenants with an eviction prior to their lease completing may actually do more harm than good in this case.