You are also assuming that the tool you are using to determine if Keyword Stuffing is taking place on your forum is accurate. Don't assume that.
Google doesn't use the meta tag Keywords, it ignores everything in it. (So if that tool is using that to determine Keyword stuffing and it looks like it is, then the tool is wrong and hasn't been updated).
Watch the video my Matt Cutts - He's the guy in charge of google search.
http://www.youtube.com/watch?feature=pl ... K7IPbnmvVU
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