This community probably is the best place to post things like this, or you can post them in your own journal and link to them from an entry here, to save space on people's reading pages. Posting them in a new entry is probably better than just a comment on an old entry, though, as people won't notice unless they're tracking the entry.

Also, if you have a paid account ($3 for a month) you can edit your comments, which is sometimes useful.