This is a quote from a genuine “bug report”.
Motif is a form of Flash files that Double Click uses to serve rich media. The
motif ads use a .mta extension, and are basically the same as an .swf with
some addition ad tracking features.
It doesn’t appear that users can see motif files in Firefox, this is a serious
problem for advertisers that are trying to serve those ads to an audience that
is likely to download and use firefox.
Oh no! ;-)
Please don’t spam the bug.