low jpeg quality with imagemagick

I would suggest that this should be a feature request to build in a setting to control how much compression you do to your images. Essentially controling the -quality flag on the imagemagick convert.

i think this would be useful.

the only thing that's tricky about this is that the quality is used differently depending on the format: http://www.imagemagick.org/script/command-line-options.php#quality

there's now a patch for this on: http://drupal.org/node/155313