In our situation, it's a matter of ADDING info to an existing post. Here's a perfect example. Here's the [cached version] Diagnostic Testing Page of The Gluten File. Any one of the those posts could be edited and added to as new information becomes available. We use this concept heavily in organizing the board.

We also tend to develop index threads to popular subjects. As Cara discussed in another post about this, we had an extensive recipe index. Dedicated members will scour the board and gather up all the threads and compile an index thread. When a new recipe, food study, etc has been added, that index is updated with a link to that post.

If anyone feels like the thread needs to be brought to the top of the stack, a BUMP post is made.

I think you can see, that we work very hard at organizing the information we post! Without the extended edit abilities....ughhhh....I'd hate to even think about how the data would look.