Yahoo is outsourcing yet another product to an outside company. Tonight, Yahoo is announcing an exclusive partnership with real estate listings and search site Zillow. As part of the partnership, which will go into effect later this year, Zillow will power all for-sale listings on Yahoo Real Estate. The financial terms of the partnership were not disclosed.

Zillow’s will integrate its 4 million for-sale listings on Yahoo’s real estate site, where users will still be able to search for home listings by the same parameters as on Zillow’s site, such as by geography, price and other criteria. For-sale listings placed on Zillow will automatically appear on Yahoo Real Estate.

Do you have your Profile on Zillow? Check out this page for how to leverage Zillow for your real estate business: http://www.zillow.com/learnmore/why-use-zillow.htm.>