You can edit your comments, using one of the buttons in lower right corner of the comment. The edit button appears only at your comments (for obvious reasons) and it looks like a pencil.
I know that, and I normally don't have any problems with editing. I still don't know what went wrong with that comment.
I posted my explanation because I had a bet with myself that at least one person reading didn't know how to force a new line, and would like to.
The information for that is under Markdown syntax, an link which is cleverly concealed under the more help link in the help info under each comment.
This is progress, actually, compared to the days when it seemed as though LW had an unnamed and unexplorable mark-up system.
Today's post, The Opposite Sex was originally published on 28 June 2008. A summary (taken from the LW wiki):
Discuss the post here (rather than in the comments to the original post).
This post is part of the Rerunning the Sequences series, where we'll be going through Eliezer Yudkowsky's old posts in order so that people who are interested can (re-)read and discuss them. The previous post was 2-Place and 1-Place Words, and you can use the sequence_reruns tag or rss feed to follow the rest of the series.
Sequence reruns are a community-driven effort. You can participate by re-reading the sequence post, discussing it here, posting the next day's sequence reruns post, or summarizing forthcoming articles on the wiki. Go here for more details, or to have meta discussions about the Rerunning the Sequences series.