Has anyone discovered interesting Fluther formatting tricks?

When I wrote this comment, I entered the text as follows:

Water boiling in a vacuum (video)

Then I turned all of that into a link to a Youtube video, using the usual Textile markup. But the posted link doesn’t include the ”(video)”; instead, the word “video” appears when you hover on the link. I had no idea that this would happen, and it’s not listed as one of the formatting options in the Guidelines.

Are there other “secret” formatting tricks?