Replying to What Now

So I got my new camera and got a ton of shots and put together an edit but I shot it in 1080p which takes up a shit ton of room and will be over the 500mb limit on vimeo and well over the 300mb limit on NS It was a tiny size until I had to render it from the Sony Vegas Pro 9 default format. I rendered to MP4, is there a better file to render to that takes less room? Do I have to resort to uploading to Facebook or Youtube which both dont handle HD as well? What do I do?

Thanks
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