http://www.knightdigitalmediacenter.org/news_blog/comments/20100707_mobile_internet_access_is_now_mainstream_pew_research_shows/
"Another point with clear implications for how cell phones can bridge the mobile digital divide: This year, 46% of cell users earning $30,000 or less per year reported accessing the internet from their phones—up from 35% last year. Also, 20% of cell users report that their phone is their sole internet access tool. People with lower incomes tend not to buy fancy smartphones with costly data plans; they tend to use inexpensive feature phones with simple web browsers and limited/no ability to run apps. This is why lean mobile strategies (such as WAP sites, which I discussed yesterday) should be an important part of any news organization’s online strategy. "