That's true enough - my point was that we shouldn't avoid posting links to youtube and such. Making it clear that they are video links is a good idea - but even when that isn't done it's pretty obvious as soon as any move to open them is carried out.

With Firefox the address shows up at the bottom of the page, with Opera in a box by the cursor, and I'm sure there are equivalents in all browsers. When a link does that, like this one does, it's a pretty good bet it's a link to a video clip.