I think its pretty important to be careful about what photo's one puts out there... and if this is your lively hood then make sure to slap a watermark right thru the center of the image...although they can be removed, it usually takes more work then its worth to do it.
Facebook is another problem because of their little share button... or that fact that you can just lift the image and save it (which you can do anywhere)... I had that happen once.. I no longer put my really good photos up because of that..
" life isnt about waiting for the storms to pass, its about learning to dance in the rain."