The MLS is going to be by far your best exposure, and loopnet, even though it has so much garbage. 

Just to clarify there are three services an agent can perform that have been discussed. 1) put the property in the MLS for exposure to potential tenants. 2) Property management for the one time act of locating and placing a tenant in the property. 3) Property management for the ongoing monthly management of the property.Sometimes 1 and 2 are not separable but in some areas they are.With regards to listing the property in the MLS, here there are virtually no rentals in the MLS so no one hires an agent just to get the property in the MLS.

Finding someone selling is another matter.When looking in those older areas be sure to carefully read the comments because there are lazy agents that list duplexes as SFH because they want the exposure but don't understand how to enter property in the income section of the MLS.

For what it's worth, I learned via "opportunity exposure", meaning that I read a lot of opportunities over time to learn what deals do and don't make sense.

Also they have a stake in the deal and will place signs where they will get the most exposure.

If for no other reason than greater exposure?

It may not be what you think (and may vary from state to state, as well).Be wary not to create an unintentional employer-employee relationship, which could create a WC exposure for your business.

This will give you more exposure to real estate.

Just too much risk for my taste.If you already have millions say 5 million and your capital exposure with this project is 500,000 to land non-recourse finance then you have a 10% overall capital risk.If you have 1 million and you are dropping 500k then a 50% capital risk.

The benefit is that you isolate the liabilty of one property to that one property - so if you're getting sued by a tenant they sue the owner of that property, and if that owner is an LLC that only owns that one property, your exposure is only that one property.However, there are loopholes that a clever attorney can use to get around or through the corporate veil.