Often when searching pm for a solution I'll discover old nodes with old solutions (as well as new relevant nodes).

For example, searching for SoundEx I found a thread from 1999 (Approximate or Phonetic String-Matching) which didn't mention Text::Metaphone. I'd only discovered T::M from the same search at Re: comparing strings - better than soundex.

Should a good monk help his fellows by responding to the old discussion with updated information or a link to the newer discussion?
Or would it just be clutter, given they'll find it themselves?

A similar predicament occurs when I post a question on pm then some time later find code or read a mailing list discussion which addresses the same question.
Should a monk add links for others?