For people who want the mobile advertising market to grow, here's the best news we can give: it isn't shrinking. Otherwise, a new study indicates that uptake of the technology is uneven and quite slow.
Time and time again, we return to the fact that people don't want to see ads on their cell phones, and this is quite a hurdle. Newspaper, magazine, TV, and online ads all somehow managed to catch on, though, so not all hope (from a supporter's point of view) is lost.
From Internet Marketing