I think there's this feud between J.Lo and Mariah. I'm not sure what it was over, but I think J.Lo took a dig at Mariah and Mariah ALLEGEDLY responded with something like, "As if I'd ever do a record/appear on stage with that cow." And there was that whole thing about J.Lo firing her manager (?) Benny Medina, and then Mariah hiring him right after (bla bla bla... you know, tabloid fodder).
It doesn't suprise me that a J.Lo fan created that thing (if indeed a J.Lo fan is actually responsible for it). I swear to you, die hard fans of some of these singers are absofuckinglutely insane. They're crazy. The 'rule' is, if you're a fan of Mariah, you can't be a fan of J.Lo... if you're a fan of Whitney Houston, you just can't be a fan of Mariah, so on and so forth. I don't really get it, but I think it has something to do with the fact that people buy into the media's portrayal of these 'dueling divas', and start taking sides. People get really passionate about it, and really start believing that Whitney Houston for example is hands down the best singer in the world, that has ever existed in the history of female singers who have ever opened their mouths to sing a song (you get the picture). The weirdest and craziest die hard fans on this planet are Whitney Houston fans. They're insane. It's like these singers can't coexist in the same universe without fans warring about who is the overall better singer, etc...