Comparison shopping engine Shopzilla has announced a partnership with Google that will begin on January 22nd and bring its merchant's listings to Google shopping.
Shopzilla is essentially compiling all of their direct merchant data feeds into one aggregated data feed that they will in turn distribute through Google Shopping.
Merchants might be concerned that the partnership could negatively impact their existing Google Shopping (PLA) campaigns, but Google will first present Google Shopping listings if that listing and the same Shopzilla product listing come into contention. Less-experienced retailers, those just starting on Shopzilla will likely benefit the most from the partnership as their listings will now be available on one of the most high profile comparison shopping engine available.
Shopzilla is not the only comparison shopping engine to partner with Google. Shopping.com also partnered with Google back in mid-November 2012.