Thousands of small wind generators are installed in the U.S. every year and their safety track record is excellent. Trees are much more likely to fall that a properly installed Skystream, but no setbacks or minimum property sizes are required for trees.
During a power outage: In accordance to IEEE and UL, Skystream will automatically shut down in the event of a power outage, and will not energize a dead power line. This is necessary to protect the utility line personnel.
Ice shed from rotor blades: Ice buildup makes Skystream blades less aerodynamic, so that they turn more slowly. Typically, ice will drop to the base of the generator tower and is not dangerous.
Children and towers: In terms of educating children about not climbing towers, a small wind generator should be treated no differently than other climbable structures such as water towers or amateur radio antennas.