Cisco has a long and studied history of growth through acquisition. The networking hardware giant also has a history of picking up players in emerging markets and helping push their products and individual market toward the mainstream. The weight of Cisco behind a technology can certainly help market gain traction. Most recently, Cisco announced that it has acquired San Francisco-based Arch Rock Corp., a privately-held maker of IP-based wireless network technology for wireless sensor networks (WSNs). So, what does this mean for WSN adoption?