Well, the online display advertising market is getting harder for everybody, so Google is not having that easier either. As RTB market (http://en.wikipedia.org

Well, the online display advertising market is getting harder for everybody, so Google is not having that easier either. As RTB market (http://en.wikipedia.org/wiki/Real-time_bidding http://en.wikipedia.org/wiki/Real-time_bidding) is growing in significance, then it is starting to make sense to diversify the networks that advertisers would use, so just using Adwords is not enough anymore, and in that sense it is time to start checking out OpenX, Appnexus, etc.