To answer your qestion - Rubix is known for this because he has been here for a long time, and in that time hes been the first to solve just about every problem like this. Not ony that but either he is the only one or one of the few to ever pass Vertex Beta vROFL, which just added he fact that he is well known. Look him up on youtube, hes crazy.
at 1:29:15am on 12/16/08
at 10:40:05am on 11/20/08
at 9:56:32am on 10/21/08
at 7:29:42am on 10/21/08
at 9:12:52pm on 10/20/08
at 8:17:15pm on 10/20/08
at 4:26:20am on 10/20/08
at 4:01:21am on 10/20/08
at 7:49:42am on 10/16/08
at 7:07:01am on 10/16/08
Cheers,
Synthlight