In terms of danger zones or crime ridden neighborhoods, are there any areas that I should stay away from?

That forms a seal that keeps stinky and dangerous sewer gases in the sewer lines.

I only allow dogs 40lbs or less and no "dangerous" breeds as stipulated by my insurance company.

I am sure it does not make things pleasant but it seems to me it is their problem, unless things turn dangerous.

If you're emailing strangers soliciting money for a partnership, you're in very dangerous territory. 

. … The real danger comes from encouraging or inadvertently tolerating rising inflation.”The classic monetary theorist Irving Fisher had warned, “Irredeemable paper money has almost invariably proved a curse to the country employing it.”

That's dangerous for landlords...

You can surely set up a seperate entity for property management to defer some of the liability but you are still in a danger zone.

It certainly depends on the industry we're mailing for, but yes, we see a distinct slowdown in response around the Thanksgiving/Christmas season, another between spring break and end of school (followed by a short burst of OK response in many markets), then a slowdown during the late June - early August vacation season.If I could do all my mailings during early spring, when the good weather lifts people's spirits and makes them more responsive, and again in September/October, I'd be pretty happy. 

Not that someone couldn’t pull a meter... but that’s going to be dangerous and not really all that beneficial.