The iPad may well be more profitable to developers than the iPhone, at least in terms of advertising, according to mobile ad network Mobclix. The company has released new statistics for month of July, in which it points out that the ECPM (effective cost per thousand impressions) rating of iPad apps is approximately five times higher than for the iPhone. This is offset by the comparatively smaller market represented by the iPad so far, since there are under 4 million tablets sold worldwide.
