The markup eats leading newlines and turns code blocks into normal text, and the normal text eats asterisks. Might I suggest backquote code quoting, and backslash escaping of special chars? (Markdown)
This is Arc, not CL. As part of the general plan to GC CL in Arc, I decided it would be enough to use one asterisk on globals. I now prefer one to two; an asterisk at the end is like one in text, warning you of an exceptional situation.
I've always been under the impression that nofollow doesn't really matter if you're linking to your own site and then redirecting. However, I can't seem to find support to back up this claim...
Edit: I noticed Hacker News direct links. But, does anyone have any thoughts on my previous comment?