vBulletin, for whatever unknown reason doesn't give you the WYSIWYG Editor by default you have to set it.
Thank you, I did it and I recreated all my links and formatting by WYSIWYG buttons

I see you already published and tagged my article (I hope I didn't cause trouble by editing it at the same time, everything looks perfect Thanks!

HTML is not allowed, you have to use the editor
That's a little pity for me, I would actually prefer to hack tags myself, in whatever format necessary (hmtl, bbcode etc.). You know, Emacs is more powerful for me than any GUI editor But actually the vBulletin editor worked flawlessly for me too, so it's no biggie.