For only skipping public members add "attrib='public'" to the skip
directive:
Example for skipping everything public in given namespace:
<SkipMethod type="My.Namspace.*" name="*" attrib='public' />
<SkipProperty type="My.Namspace.*" name="*" attrib='public' />
<SkipEvent type="My.Namspace.*" name="*" attrib='public' />
For more details refer to:
http://code.google.com/p/obfuscar/wiki/Configuration#Accessibility_Check
Werner