It seems that inline warnings are being crawled and indexed by Google which is quite bad.

Here's home Google listing for one of my pages looks:

JavaScript: The Good Parts - Technical Presentations

warning.pngSorry, URIs from the range "http://www.techpresentations.org{{#mediapath:JavaScript The Good Parts.jpg}}" are not available in this place. ...
www.techpresentations.org/JavaScript:_The_Good_Parts - 18k -

I fixed the error and google is probably going to update it eventualy, but still, it's not very good idea to have embedded HTML in there - maybe it's better to have them inserted using JS instead... it might help with enabling/disabling it on per-user basis as well.

      Sergey