It's already a busy week for acquisitions in the search market -- and it's only Sunday. IAC/InterActiveCorp, the Barry Diller conglomerate, is close to purchasing the search company for $1.9 billion. It's an interesting exit for a company that has been outmatched by the online advertising clout of Google and Yahoo. Will IAC give the search giants a run for their money? With Diller at the helm of IAC, and Terry Semel at Yahoo, this is shaping up to be a Hollywood showdown.