Yes, juiceme is running some experiments. For which he has my eternal gratitude.

@Maemish, I will tell you a secret. After uploading an attachment, open it in a second tab and find out the attachment ID. It is embedded in the URL. For example, your attachments are 40830 and 40832. Then use the attach tag in your post, like this:

[*attach*]40830[*/attach*]

(Obviously, remove the stars. I had to add them to stop TMO trying to display the attachment.)