Your 'survey' reads more like a focus group for lead generating companies.
My experience with them has been almost 100% bad with poor leads delivered and the 'leads' almost never turning out to be serious buyers and sellers.
My experiences with
www.BuyersUSA.com and
www.HomeGain.com have been the worst.
HomeGain chages $29.95 per month PLUS a 30% refrral fee if you ever get to closing with one of their leads.