From NY Times.com 1 Landline+ 1 Cellphone = 1 Handset
This sums up why advertising dollars are chasing the mobile.
WHAT'S the best-selling piece of personal electronics on earth? What's more popular than computers, camcorders, digital cameras or even iPods?
It's the cellphone. Cellphone sales dwarf everything else. According to the Gartner research firm, 40 percent of the earth's population will be carrying cellphones by 2009. Developing countries are skipping the landline phase altogether, going from no phones to wireless ones.