Search is one of the few untapped inventory sources remaining on the social platform, which has seen many advertisers directing more budget to Instagram this year. The initial ad test in search results is limited to select automotive and retail advertisers, but if the company sees a promising response, it will open up search results ad inventory more broadly. Advertisers participating in the test can select “Search Results” as an additional placement option that will apply to both primary search and Marketplace search inventory. With the current group of beta-advertisers, ads may appear in search results for terms related to auto or retail topics. Advertisers cannot select specific keywords or phrases to target. Get the full story at Search Engine Land