The title of 'World's Greatest Musical Comeback' now belongs to JLo.  A digital search agency called Accuracast used a seven year finding of 1 billion online Google searches to put Lopez of even Mariah Carey.   Lopez's turn as a judge on American Idol provided enough exposure to get her back onto the pop charts with 'On The Floor', one of 2011's hottest dance tracks.  The attention was just the push the self-branding diva needed to record the album Love? and reinvent her musical sound enough for the general public to care.