I think that allowing human-assigned labels is likely to be important. I can't hold more than a couple numbers in my head and differentiate between them: very quickly, I think that it gets to the point where I constantly have to be reading back over the thread somehow to understand it.

I appreciate your earlier comment that this is easy from IM, but it's still something that could be avoided if I could have a tag that is more likely to trigger my memory attached.

(BTW, this page (http://commyou.com/) is a 403; might want to just force a redirect to the real site, as I thought I got the domain wrong...)