From what i can tell and have read through forums and relevant sites it appears being penalised for overoptimisation of keywords is very easy to achieve...
I have read 1% to 2% keyword density is around about where you want it (baring in mind everything on the page including all links widget etc add to the density if they contain keywords).
am i thinking on the right lines here?
your opinions are very much welcomed!!
I'm curious as well.