[xg15]

Except HN explicitly discourages this: You can intentionally submit either a text post or a link, but not both. For links, you could theoretically edit the title, but there too, the guidelines state that you should just use the original title from the article if possible.

[rwmj]

Yes, it's a shame that HN doesn't include a short 1- or 2-sentence summary of each article (on the front page).

[xg15]

Exactly. I also think it would be interesting to know why someone decided to submit an article, so they could write their reasoning in there too.