I've been notified about some art thief posting pictures from Google on to their gallery. There were comments complaining about this on their profile. Either nobody knows how to report them or the DA committee won't take action.
Just in case if you encounter something such as this, here's how you can report them:
1. Go to "Help and FAQ" from the DA drop-down menu that's beside the logo
2. Click "Contact the Help Desk". It's on the left side in bold.
3. So know it would tell you to send a note to them. For the category, click "Abuse Report" under "Copyright and Etiquette". What they mean by abuse report means is reporting on abusive and unacceptable behavior that goes AGAINST their policies. For example, stolen art.
4. Now write the report.*
*Don't forget to put a subject on it. They may not take it as seriously.