I think it's safe as long as you're smart about it. Don't give your address to anyone- meet them. Drive there yourself. Maybe meet for lunch or coffee (daytime) the first time around. Have your phone at the ready. Don't give any information you're not completely comfortable with giving, and until you're completely comfortable giving it. As long as you use some common sense and trust your intuitions, Obi-Wan, (ooh, sorry, just saw Star Wars yesterday)- it's pretty safe.