If people go by your place and see your "For Sale" sign, I suggest giving them all the information.
When I was selling my house, I printed two pages of information, the first with house and land details and the asking price and the second with disclosures of ALL known defects. Both pages went into a ziploc baggie and I usually kept about a dozen baggies hanging from the sign. People would sometimes stop, see the baggies, get out of the car, and leave with my two pages of info. I think this was VERY helpful. (And I knew the buyer could never come back and claim I hid any defects.)
I think it is helpful to be respectful to prospective buyers. It seems so many agents have the attitude that they want (demand) the buyers to call them before giving up any information, like the asking price. So many times I see a "for sale" sign with just a phone number; no price, and I think, "You asshole! Are you ashamed of your asking price?"
It may also be helpful to put your information and pictures on a web site and throw in some commentary. The idea is that the keywords would get indexed so that someone who might be interested in moving there could stumble on your information. If nothing else, it could be an alternate (and better) web site than what your agent has.