I don't feel that it's necessary to throw money at Yousendit, as the free service allows us to send up to 100 MB of data, which is accessible for 100 downloads or one week.
What sorts of files would the Gang of Five need to pass around that would be much larger than this limit? All that comes to mind are high-quality video files, where the legalities behind some of them are sketchy. I have been able to post watchable versions of our LBT TV episodes on yousendit's free service with no problems so far.
If anyone needs the space to host their private videos long-term, they need to find their own file host. Most video clips created by members here shouldn't be threatened by YouTube. If they are shut down, the creators can easily post the video on the free service of Yousendit, allowing GoF members to download the video to their computers to keep indefinitely.
In short, I don't think that videos need long-term storage outside of youtube, as yousendit Free can provide any necessary transfer system to keep any GoF files safe and secure.