Yahoo announced Tuesday it has agreed to acquire behavioral targeting network interclick for about $270 million in cash. The Web portal said the move would enhance its data targeting and optimization capabilities, and provide new premium inventory supply drawn from disparate sources. "This investment underscores our focus on enhancing the performance of both our guaranteed and non-guaranteed display business across Yahoo and our partner sites and, combined with Yahoo's reach and advertising leadership, will deliver a powerful solution for marketers," said Ross Levinsohn, EVP, Americas region. Through its Open Segment Manager (OSM) data-valuation platform, interclick aims to help marketers boost …