Those are nice ones. :-) Silvers aren't.
The Silver Maple has brittle wood, and is commonly damaged in storms. The roots are shallow and fibrous and easily invade septic fields and old drain pipes. It is a vigorous resprouter, and if not pruned, it will often grow with multiple trunks. It is, nonetheless, widely used as an ornamental tree because of its rapid growth and ease of propagation and transplanting.
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The Freeman Maple is a popular ornamental tree in parks and large gardens, combining the fast growth of Silver Maple with the less brittle wood and less invasive roots of Red Maple.
Silver maples are almost a weed around here. :-/
Cheers,
Scott.