The concepts of 'clockwise' and 'anticlockwise' cease to have much meaning in three dimensions. Something which is apparently moving 'clockwise' around the earth's equator when viewed from above the north pole will appear to be moving 'anticlockwise' if viewed from above the south pole.
A large number of man-made satellites (e.g those which provide satellite TV services) simply follow the rotation of the earth (i.e. they're 'geostationary' = permanently above the same point on the earth's equator). To ensure that they move at the same rotational speed as the planet's surface, that means that they must be 22,240 miles above the equator. There are thousands of satellites positioned in a circular band at that height but (because of the vast circumference of the band) there's no risk of them bumping into each other.
However, while individual satellites don't pose a risk to each other, the space debris created by launching and positioning them does pose a significant risk . There are millions of items of debris (anywhere between the size of a pinhead and the size of a fridge) out there. They pose a potential hazard to all space launches and they've already been attributed to the failure of existing satellites:
http://news.skymania.com/2006/04/collision-kno cks-out-satellite.html
Chris