Sticky,
Everyone has different opinions..... but mine is....
Page Rank is useful....
It is NOT in and of itself GOOD!, but its useful.....
That page you have that is PR4, must have some "value" to Google, and it also must have links leading to it. Therefore it is of some value.
I would change the page and its keywords so that it could either..
- get ranked for its own KWs
or
- pass relevance on to the sites it links too
or
- improve its own relevance
I would NOT "add a few kilobytes of spammy keywords " -
spammy keywords can get you downgraded or banned. Choose some approriate KWs, and use them wisely.
You may find you have a little gold mine
DD