I email the anonymous address on the Craiglist ad.  

.#2 the main purpose of a LT is anonymity, when the predators come a knocking, they can't find whom the owner is of the trust.  

I used to be very private about my investing and liked anonymously owning multiple properties. 

A quick search here will turn up many threads from those who have been scammed by online lenders and none (that I could find) by those who met their potential lenders face-to-face, in advance, and developed a relationship.I know many believe they can find everything they need online anonymously, but borrowing is a relationship-based business.

Now another viable option is owning notes in a trust, which I also like because it gives you anonymity and gets you out of the public record.

I put commercial apts 5+ units in LLCs for anonymity and asset protection.

Confidential would be the HOA getting an anonymous complaint. 

For added anonymity, you might want to look into hinding behind a trust.

An anonymous whistleblower is alleging that Zillow steals listing data from agent websites in order to compare it to data scraped from realtor.com and see where its own site is falling short.In a letter to attorneys for realtor.com operator Move Inc., a presumed Zillow employee claims knowledge of illegal actions at Zillow and points Move to specific people, documents, keywords and locations to search for evidence of those actions.The allegations support Move’s claims of misappropriation of trade secrets in a lawsuit filed a year ago against Zillow and one of its execs, Errol Samuelson, a former Move employee.

Two specifically are the series llc and the trust.The trust I like because it isn't legally recorded and gives an extra measure of anonymity.