It is your friend that needs to do something, not you for them. AIf they were not told why, then perhaps you can find out for the person. It happens for a reason. An unacceptable photo, bad language, solicitation, rudeness, a name used that was vulgar?
Best idea would be to contact Caedes and ask him why.. I doubt it would be for an unacceptable photo, i think they would just be told not to post stuff like it again and then they got rid of it, for bad language etc would probably be a warning.. if it was for a vulgar name that would be banned, harrassment would be banned.. etc... it would have to be something bad that they did to be blocked..