I could have the slides playing on one of my screens and knock out emails, etc on the other.  

So I'm a big fan of the school of hard knocks; there's not much studying to be done and you learn the lessons real fast.  

I'm assuming they would come knocking for their money as soon as anything was changed with the deed, wouldn't it?

It needs to be totally knocked down.

I'm not rehabbing now...but when I did rehab more actively, I got houses from: the MLS, direct mail, door-knocking pre-foreclosures, probate, FSBO signs. 

It's what we like so far and what has been *knock on wood* working so far for us and our goals.

Can I knock on her door every day to ask for the rent payment? 

Once you get a property under contract, if it is a good deal, buyers will be knocking down your door once you market the property.

He added that if someone came knocking on our door asking how much we pay a month, that we should ignore them and not answer any questions that they have because they do not apply to us as tennants.

Leveraging appears to work during an upswing but in 2008 I watched a lot of people that were highly leveraged get knocked out of the game.