Ken - why the harsh tone :)
I was merely stating that some site owners try to over do their efforts and in fact get caught up in over doing; it in their attempts to optimize some go overboard and end up spamming instead of optimizing.
So ... to that end, I would say that one can over-optimize no different than one could under optimize; meaning:
under-optimize: fail to present in the best possible light.
over-optimize: go beyond acceptable
SEO and fall into spam