According to ClickZ, it doesn't look like Google's new CPM-based advertising (cost per thousand) is going to be quite as big of a success as Google's ppc (pay-per-click) AdWords program.
Apparently, most marketers that ClickZ contacted agreed the availability of display ads and a new CPM-based pricing model would be attractive, but doubted it would be enough to attract legions of brand marketers at this time.