Oh and here is
a guide on "opinions" and just about everything you want to know about the opinion form on this site...
Another thing you can ask for, in this forum, is "beta feedback". (Beta feedback is feedback for improving your video before it's finished - in other words you are still in progress of working on your video). If you are looking for beta feedback you do not want to upload your beta video here.
Local uploads are supposed to be for the final version only... But you can still ask for feedback by linking to an external site if you are looking for that sort of thing.
The Stickie will give you more information on that.
Feel free to check out some of the other exchange threads and lurk a bit more to see how things work here. It actually might help you become familiar with the opinion exchange process on this site.