Twitter Inc. has added another way for retailers and other marketers to reach consumers using the social network's search function. The social network has added Promoted Accounts to its search results. The ad unit lets an advertiser pay to promote its Twitter account. Twitter also features Promoted Tweets in its search results. Promoted Tweets enable a marketer to pay to increase a post's prominence. "Search presents a great opportunity for marketers to connect with users, just when they desire information relevant to their search query," says Nipoon Malhotra, Twitter project manager, re...