joining this site takes a few seconds and its free. The discounts vary from $5-$10 on the cheap courses to $35- $70 on the better ones. You can have them e-mail you available tee times in your area or where your vacationing.
Here's a few tips, make sure everyone in your party turns up, keep an eye on the weather and don't book to far in advanced. This site is especially helpful for those living in areas that have 365 days a year of golf.
Here's an example of a discount offered yesterday for today in my area.
CC of Coral Springs Fla....tee time 12.58...normal price about $48...GolfNow's discount price $32.50 including taxes and fees.