I haven't, but I did somehow get signed up for contractor.com, which gives the tease of a lead for free, and you have to buy it if you like the description (and location). The leads range from $5 to $30, but so far I haven't paid for a single one, because they all seem to be junk.
In my humble opinion the people ready to drop serious money on a project are not yet ready to just let a website lead service do the preliminary work for them. However, many of the price shopping, small project people seem to be...
