Zillow is a classifieds board: you post an ad and include your website URL.
Classifieds that still take a website URL in the ad
The door is an ad, not a product catalog form.
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Ziprecruiter is a classifieds board: you post an ad and include your website URL.
Zoopla is a classifieds board: you post an ad and include your website URL.
How a classifieds submission works
You pick a city or category, write the ad, and put the URL in the body or a website field. Some boards mix dofollow and nofollow. Their live ad is the source.