The costs to run it are too high and haven't or can't be reduced. Granted, the demographics Yahoo can target and Yahoo's share of internet advertising aren't th

The costs to run it are too high and haven't or can't be reduced. Granted, the demographics Yahoo can target and Yahoo's share of internet advertising aren't the most appealing, they did buy Flurry and others which were doing fine monetizing small shares of ad revenue. Also, at this point, under-investing in security never pays.