>>Check this out. Groups of hobbyists are able to find many of the secret spy satellites just using binoculars.
>>
>>http://www.wired.com/wired/archive/14.02/spy.html
>>
>>Apparently the US now has a stealth satellite that they use to block hostile countries and the hobbyists.
>
>During the bombing '99 the FRY army knew exactly when they're being photographed from above, and switched positions within 30 minutes after that. May explain their minimal casualty count.

This thing is pretty cool...
http://science.nasa.gov/Realtime/JTrack/
...I like the last one on the page... "J-TRACK 3D"