Gaga was very insistent that ARTPOP was capitalised, and since this it seems capital letters have become "the thing" for album titles. To name a few:
Beyoncé - BEYONCÉ
Demi Lovato - DEMI
Jennifer Hudson - JHUD
Katy Perry - PRISM
Kelis - FOOD
Kid Cudi - SATELLITE FLIGHT
Marina and The Diamonds - FROOT
Michael Jackson - XSCAPE
One Direction - FOUR
Pharrell Williams - GIRL
Prince - ART OFFICIAL AGE
Prince & 3RDEYEGIRL - PLECTUMELECTRUM
Trey Songz - TRIGGA
And I'm probably missing a few too. They say she has no influence, but Gaga was very specific about this. Was it an experiment she was doing to see if people copied her?