It's interesting how many people don't read the entire post.

I tell people that real estate investing with me is more like a disease than an occupation.

When you make every effort to help people and forget about your own profits, that's when magic starts happening. 

I even offered a discount for the first month rent, and I'm either getting flaky people or scams.

You will learn so much and meet so many awesome people! 

IRS liens are no big deal.. worse case you just have to hold the property about 180 days and they fall off.. many people get scared of IRS liens myself I would target those as I knew many would not bid because of it.. 

Now is not the time to be asking those people...terrible advice imo. 

Are there non-disclosure laws that prevent transaction coordinators from sharing information with other people?

You will need to be persistent, possibly patient, network with many people, etc.  

Go on a random Tuesday and you'll see a FLOOD of people.