Suggest HN: popular submission HTTP addresses become links

When a submission is upvoted by a suitable number of people, which could be weighted with a trust metric, HTTP addresses in the submission become proper clickable links.

Currently someone comments the link after a little while and people then have to notice the comment or copy-paste the link or such like.

Mentioned this idea before, just came up again (someone complained the OP hadn't put in the link) on the "marrily" post.

Could be just the first address that becomes a link.

Thoughts.