My tenant keeps calling me for unnecessary things.

Also, at this point in my investment business I would rather do it alone and retain the equity for myself as a partnership will expose me to unnecessary liabilities such a personal guarantee, making sure the partner perform his end of the bargain, etc.  

Tenants have trouble understanding that even though I don't impose a late fee on the 2nd it is still considered late. 

In my wife's case it was a totally unnecessary expense - a loss.  

Have them send it to a PO box or is that an unnecessary expense?

Having a solid emergency fund as well as eliminating any unnecessary debt will allow you to put more money aside for REI and will make you a more attractive borrower to lenders. 

Some countries imposes various limitations on how much money you can wire to a foreign bank account. 

This means the bank isn't going to let the property go for less than the balance, because they would take an unnecessary loss. 

On the other hand the 1% guy maybe really hungry and be very aggressive in his marketing but the low % to buyers agent still imposes a problem.

You immediately implied Michael was a liar which was completely unnecessary.