Is this the page where visitors sign up?
http://michaeltrinchitella.yephomes.com/search/
100 sign-ups in 14 days is great! Especially wtih 22 unique/day. Are they of any quality? Are you closing deals from the sign-ups?
The sign ups, IMO, would be most useful with some sort of drip email campaign.
I'm in the same boat as coastal: I've never made my visitors sign up and I have been thanked many times while showing them homes or when they call. Some have searched for homes on my site up to a year before actually calling.
However, I'm not looking for a pat on the back, just checks. I'd be willing to switch it up if I can convert more sales.
There's always more than one way to skin a cat (no offense to cat people).