Media Life: Google is tackling one of the biggest issues in online advertising. The Internet giant is making an effort to be more accountable, saying it will soon make ads on its display network 100 percent viewable. Put another way, Google Display Network will become one of the only online platforms where advertisers don’t pay for an impression unless it was viewed in its entirety. Google says that within the next few months all advertisers that buy on a CPM basis will only pay when their ads appear in a viewable position.