What is the best practice to optimize page content with strong tags?

[MonsterWeb28]

For example, if I have a sub page dedicated to the keyword "Houston Leather Furniture" is it best practice to bold ONLY the exact match keyword? Or should ONLY the words from the keyword (so 'Houston' 'Leather' and 'Furniture')

Is there a rule to how many times it should be done before its over-optimization?

I appreciate any information as I want to do the BEST possible practice when it comes to this topic.

Thanks!

[irvingw]

This is something i stopped doing since i felt it probably had very little impact and could make the page look over optimized.

[KevinBudzynski]

Honestly, I would spend the time on off-page factors as I do not believe these tags are weighed that heavily anymore.

As long as the kw string on these pages seems natural and not "overdone" you should be fine.