Revenue from wireless networks will rise to $3.46 billion in 2009, up from the $969 million expected in 2005, says a new report from In-Stat. The growth is driven by an increasing number of hot spots, the number of which will double in the next four years from the present 100,000. The pace of growth will drop in the short term as the market begins to mature. The most growth in the sector will come from the cafe segment, which includes coffee shops, fast food, and restaurants: The segment will grow 2.5 times from 40,000 venues today to just under 100,000 hot spots by 2009. Article