Try contacting Mediafire. If you let them know that you're actually legally allowed to share that content, they may put it back up and remove the strikes (I don't know, I haven't gotten any of the 'strikes' emails yet, but it's worth a shot). I mean, I keep telling everyone to try contacting Mediafire (it's not like switching to another host is safer if whoever's abusing the Report Abuse button realizes Box exists, too), but try contacting Mediafire. Can't hurt and might help.