Post movies and vid clips in the threads that are already assigned....
No... if there are existing threads (especially if there are two or more) that are already in place, you contribute to those threads. Bump them back to active status by posting to them. There is no sense in creating duplicate threads that contain the same basic subject matter. It only wastes server space, causes confusion, and is pretty much basically considerd spamming.
This is the thread where ALL movie clips should be posted: