collapsable threads please -not just for trolls.

The first person to post a reply to a new article strongly influences the ensuing discussion, since the thread tree often pushes the following non-reply posts down. This encourages people to post quickly, and not take time to read through the article. It also encourages replies that are off-topic to the thread, since it might be the only way they will be seen.

I think all threads should be collapsed on loading an article. What do others think?