To post youtube clips on WXC is very simple:
Go to a youtube page, in the upper right corner there is a box there you'll see "Embed" (under "URL"). Next to "Embed" there is a text box containing "object, width=...".
Copy the entire thing from that box, and paste it directly into
发贴->内容 text box. That's it.
Youtube is becoming the central portal for exchanging video and music. It already has huge amount of users. It has become the center of entertainment for me, replacing tv and music listening, since I can find almost anything there. Apparently Bill Gates feels the same way :).