Please remember:
1. Watching video online does eat into your monthly data allowance if you have one. Most YouTube videos are around 2-3Mb each in size, so if you view say, 5 videos then that does equate to around 10-15Mb of downloads.
2. Once you start a video playing it will continue to download even if you pause it (this helps visitors with slower speed broadband). To avoid downloading, just go to another page and it will stop the download.
3. The videos aren't hosted on this site, they are 'embedded' from the YouTube page and they may be removed by YouTube (or the uploader) at any time, so if one disapears that will be the reason.
Let me know if you find a video you'd like to share too.