Google AdSense seems to be the leading canidate for click throughs.What other ways can I drive revenue?

Says over time rent will rise eventually leading to cashflow.

Those that are problems are quickly evicted and then I find better tenants to replace them.In addition, doesn't it scare you when each one brings in only $100 a month each or so, The $100 per unit per month is after all expenses and the debt.

Work on paying off some debt, catching up on any delinquent accounts, and removing any inaccuracies before officially applying for a new loan.

Your earlier comments lead me to believe that selling the contract is not possible?

It's a great niche to be in, because it takes EFFORT to track down the leads which many aren't willing to put forward in most cases, so the competition stays pretty low in most markets.

The software, realeflow, handled leads and info about the properties.

I think aweber is superior, however it requires double opt in, meaning that all subscribers must verify their request to opt in.This results in a very high quality lead, however, it makes it slower to build your list...but that's the price you pay for quality.Good luck!

So assume you're not starting out with a huge budget Then I would structure this with 1 campaigning with the goal of getting leads. 

I think the down is really a function of the debt service coverate ratio.