Currently the 'source' link on gallery modules is completely user controlled - unfortunately this can lead to a number of broken or 'less than useful' links to the root of the gallery tree or the
like.

This is a bit frustrating and could lead users to believe that something is 'broken'.

For non-CDN modules this likely cannot be helped - though perhaps the link should be tested at the time of entry into the gallery to lessen the chance of inadvertent typos etc.

For CDN enabled modules however, there should be a link to the YUI mirrored source, this should be fairly straightforward to add and would ensure that CDN users know exactly what they are getting (
especially in the case where the user defined source has since diverged ).