Oh it's because some butthurt copyright claiming company called the International Federation of the Phonographic Industry (IFPI) I-Don't-Like-It-When-People-Upload-Files-With-Celebrity-Names Corporation removes any file or contents that contains music made by popular celebrities or stuff like that.
I guess Lady Gaga is covered by the IFPI too, and I suppose they don't care of the fact that the extension is an .osz; they just look for the file name in front of the extension. If I were to name the file something ridiculous like TheMusicVideoForThisSongIsAbsolutelyDemented.mp3, they would've probably avoid it.
tl;dr: The DMCA is forever evil.
Oh, and I guess I wasn't necessarily the only MediaFire user who got their files removed.

...too many WOT circles.
I guess Lady Gaga is covered by the IFPI too, and I suppose they don't care of the fact that the extension is an .osz; they just look for the file name in front of the extension. If I were to name the file something ridiculous like TheMusicVideoForThisSongIsAbsolutelyDemented.mp3, they would've probably avoid it.
tl;dr: The DMCA is forever evil.
Oh, and I guess I wasn't necessarily the only MediaFire user who got their files removed.
...too many WOT circles.