You'll have to excuse me for the late reply. Hello! I suppose that would depend on what your definition of damage would be? Before I type anymore... I would ask if you've read the following links?
In particular, that last link. 
"In time, it became clear that some users were issuing LUV to themselves using alternate accounts"
I think you will find the answer in these words... Just the idea of folks abusing something as simple as "sharing with others" should say it all. I hope that makes sense, my friend.
RE: Ecency waves Jul 28