A post from the RunningAHEAD Forums (all emphasis is theirs):
Attention runners! The University of Delaware Running Laboratory would like to invite you to take part in a web based running survey in order to better understand the habits of the modern runner. Your participation will involve 15 minutes of your time each month to fill out an online survey. You will fill out one survey a month for a year, upon which your name will be entered into a raffle to win a GPS! To qualify for this opportunity you must be relatively healthy, between the ages of 18 and 50 and run more than 10 miles/week. Please contact Allison Altman at 302-831-4646, or email@example.com for more information.
Update: There are 20 Garmin GPS systems that will be given out to participants in a drawing.