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It looks like the dust is still settling from the "updates" Google was applying last week.  Some of my content has been dancing for the past few days as well.

Hi Brendan! Moosa was correct that the On-Page tool will let you know if you're keyword stuffing.  The section you'll want to take a look at are the High Importance Factors of the report (http://screencast.com/t/3lpHLhKhhi).  If you are spamming, the "Avoid Keyword Stuffing" alerts will show up as unchecked and the read more section will provide you with specific details. Best practice is generally to have at minimum 4 and no more than 15 mentions of the keyword on a page.  Just a heads up that our crawler will look at the content in detail to find an instance of a keyword.  Example: Keyword = tanning salon seattle; Page contains phrase; best tanning salon in seattle This would be tagged as an instance of the keyword since tanning salon seattle appears in that exact order within the phrase. The reason we do this is because of best practices and the way we've seen this effect search engines in the past.  Since the search engines really don't tell anyone how they determine these metrics, we try to err on the side of caution to cover all bases. Thanks! Sam Moz Helpster