New answers tagged forum
I think the issue here is not how many times the keyword (key-phrase) appears, but how often it appears in context with everything else. If the page only has 50 words and 30 are the keyword, then yes, that could be cause for alarm, but I will assume that the word is used in context and reads well. The site is a forum and as such, for the most part, content ...
As you mentioned, Google can recognize forums and forum like structures, so there should be no problem. Plus, as far as you explain, the repeated words seem to be properly positioned/tagged on sentences, titles and may be meta tags on the page, all of that is the correct use of the relevant words.
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