1script - 3:42 pm on Apr 18, 2012 (gmt 0)
Sorry for trying to be a stickler, brinked, but what makes you call anything other than your item #1 "over-optimization"?
I can see how over-zealous use of a "target" keyword/phrase can be considered over-optimization. But all the rest of your great points sound like SEO tricks rather than anything "optimization".
Isn't optimization, as well as its evil cousin over-optimization something that has to do with on-site factors, such as use of proper keywords, internal link structure, possibly some no-follow / no-index magic thrown in for a good measure and other internal factors over which you're presumed to have 100% control?