My hope is that this method will result in Google selecting my page more often as the top result, or at least higher than it would otherwise be for these extra keywords. The results I am getting appear to be steadily improving, but of course that could be for a variety of other reasons.
What I am most concerned about is whether this technique could be seen by big G as 'keyword stuffing'.
For my main keyword (which is generally not included within the additional phrases I was referring to above) the keyword density is 6.9%. I have read that 3 to 7 per cent is the best range, but I would welcome other opinions - ideally based on practical trials.
What say ye?