Current Analysis' Peter Jarich explains the obstacles to launching femtocells, which are very small radio base stations (2G, 3G, WiMAX, etc.) designed for residential apps. Jarich lists interference as the top concern for carriers looking to deploy femtos and health concerns (wireless tower in my living room?) as the last one. Article [1]
Links:
[1] http://www.rcrnews.com/news.cms?newsId=27419