I was just saying you could have a place to paste in a url, and leave it at that (let the user figure out how to get their video url-accessible). If an applicant can't figure that out, it's probably a worthwhile filter.

[Edit]: Validation of the video is probably desirable, since you then don't have to ping applicants whose videos don't work. I'm willing to bet that posterous does validation and replies if the video is bad.