MochiAds recently are serving up advertisements for other Mochi-advertised games instead of ads for companies that pay for MochiAds.
So the MochiAds company is probably not doing so well.
When a company like MochiAds goes out of business, their domain name will eventually lapse.
Then someone could buy the dead company's domain name and serve hostile content.
The Mochi system seems to use two domains (thx Eltima). The record for Mochibot.com expires on 09-Feb-2012. Mochiads.com expires on 21-Jan-2012.