I like to leave comments on various news sites using my real name (or an alias based on my real name, like I do on HN). I also understand TC's motives for wanting users to stand up behind their opinions using their real names. It improves the quality of the discourse, although some people may feel intimidated to use their real names.

What I don't like about the new TC system is it ties the comments into Facebook, which I see as an area for communication with friends and family, most of whom are not interested in seeing my thoughts on technology.