I wanted to bring up the topic of the questions and answers as they relate to specific WordPress releases. Since we're discussing a specific product rather than a topic, our information has a greater potential to go stale as new versions of WordPress are released. Functions become obsolete, new functions and features are created that may more succinctly answer the original question.

Some possibilities:

1. Encourage questions, or at least answers, to mention which WordPress version they are targeting
2. Tag with version numbers a la "wordpress-3.0.1" ([tested here](https://wordpress.stackexchange.com/questions/639/creating-an-image-centric-custom-post-type), I hadn't used periods in tags before)
3. Request a custom SE feature to display the current WordPress version number at the time the question was posted. (Might not always match the user's version of WP, and I'm not sure how feasible this is.)
4. Just ignore it, people can post a new question if the existing answer doesn't seem to work.