Good point, @Rustler. 

@aafable if you are ooking at this as possible business dealings do your research, know going in what you you csn do for him.

But also be prepared for an unsilicited sales pitch. He may be selling discounted utilities or phone service (such as the former Excel) or other MLM (multi-level marketing pyramid schemes) SOP (standard operating procedure) is a free lunch or coffee and the "offer" of how what you buy every day can be a business model.

Or...he may just be interested in you.  It happens. Enjoy the coffee. Watch out for quicksand