My properties do not usually rent the first month or two when i buy them if they have a vacancy, partially because the first thing i do is fix up the vacant unit. you just need to prepare yourself for having that possible down time, but adding more dept to pay that monthly dept, you may be adding logs to the fire that is already burning and could get out of control, know your market area, make sure you are comfortable with buying the property with the knowledge that it will rent.

Pigs get fat, Hogs get Slaughtered"  - This is true over and over again, so when you meet a Hog, don't worry, his or her day of reckoning will come.  

And how do you know the well and the septic didn’t also get burned up leaving you to dig some very expensive holes in the ground?

When he falls asleep on the couch smoking, burns the place down and kills everyone you might rethink your priorities.

I am very new and have a burning desire to learn about REI!

Concentrating all my money into a single house, and hoping it doesnt get burned down :P.

If your are lucky they will just burn your house down. 

OMG... the fireplace blew up.. you said we could use it, it's not my fault we burned the house down.I had 2 units that had fireplaces,, old Victorian house..

I was trying to when I fat fingered it and hit post. :-)But in AZ there seems to be additional effort or cost associated with signing a warranty deed vs a quitclaim deed.

Relationships also change over time and lack of activity in remote investments can burn you.