LMAO: This was the post I started skimming at earlier:
There was a time when it became evident that an excessively high percentage of identical anchor text in inbound links caused a penalty. This was not just casual observation (or guesswork) - it was tested.
Exactly the point. Over a certain percentage of identical anchor text on inbound links cannot be done with independent decisions. Not 80-90% of the people linking will use the same exact wording of "money keywords" in the anchor of links, it has to be contrived. Natural development would be indicated by a certain amount of variation.
At the time the testing was done, there was a very specific figure - under nn% of indentical anchor text = no penalty. Having nn% or above identical = penalty. I remember the exact figures.
Changing anchor text of existing links is a different matter, and so is internal anchor text in global navigation and otherwise.
…but the original post is about nav links.
Where is the original post, so I can keep up with the thread?
I just read back and it looks like this portion of the thread is about varying link text, both internally and externally, and the entire thread appears to be about "fundamental changes".