Revealing bidder info would be a no-no, but there isn't reason to conceal the identity of the agent presenting the offer.

It's not unusual for the home inspections to reveal a few things that were not obvious or easily observed.

Mold testing revealed it in the ceiling of the basement, water damage was evident when the fiberglass insulation was removed. 

Market analysis has revealed that for 2-3 bedroom apartments in the 1000-1250 square foot range have rents going for $1700-$2000 and even higher.

The final walk through the day before closing revealed the empty unit had fleas in the basement.

Here are the snippets that are relevant:Hedge fund manager Kyle Bass, who runs Dallas-based Hayman Capital, tanked the stock of a little-known real estate financier Friday by revealing that he is shorting the company.

What you ideally want is a response to your post that amounts to "Oh, I'm a landlord in XXX too, I faced that issue, here's what my research has revealed..."

Will a visit to a tax office reveal problems with the land such as zoning or poor foundation?

@Yash MirchandaniNot an expert in Wholesaling, but the aspect of seller psychology (not so much negotiation even), but just working the conversation to make the seller reveal their deeper desires and what they want to hear said to sell the property to you.

Even if your private lenders weren’t requiring a lien/mtg, you still have to reveal any loans from them And provide documentation/source of funds for your down payment.