Jumping out on a limb... but when a company:
1. dedicates 33% of the above-the-fold real estate 2. replaces ad inventory with in house promotions
You can consider it a strategic priority!
The question remains, however, with Weatherbug and other successful weather iPhone Apps available, why: 1. it took so long to create an iPhone app 2. what the differentiating feature set is... is there really a compelling reason to have me move off Weatherbug? (answer: no)