Recently, there was a question posted that was very similar to another question, but it was not close enough to be considered as a duplicate. This question is very similar to this one that I answered.
Duplicate issues aside, I feel that I could copy and paste the old answer as an answer to the new question, and it would be a good answer. Joby Taffey linked to the original question, and I've seen a reputation boost from new people seeing the old question and answer.
What I'm looking for is the StackExchange-ish way of handling this situation. I'm not very interested in re-writing my answer (I've already done the work once), and just copying/linking the old answer or a paragraph from the old answer seems like it doesn't really add anything to the site.