WP3.1 has introduced post format.
Below is described on the codex page of "Post Format"
link - A link to another site. Themes may wish to use the first tag in the post content as the external link for that post. An alternative approach could be if the post consists only of a URL, then that will be the URL and the title (post_title) will be the name attached to the anchor for it.
This sounds great, because I can share stuff I'm reading on mobile devices onto my blog together with the post-by-email function, just sending title as email subject and a link as email content.
But it seems there is no easy way to achieve this at the moment.
So does anyone has some idea how to assign the external link in post content to the post title, thus making a Link format post.