See [[WT:BLP]]. I've been changing "negative" to "controversial", since controversy is the problem as I see it, and using the word "negative" is blatantly throwing NPOV out the window.
Our pop culture articles are a wasteland of fan-maintained hagiography anyway. Do we need to throw NPOV out for those? See e.g. http://www.neilgaiman.com/journal/2006/05/what-bears-do-on-lawn.html
There's also a fair bit of Jimbomancy going on, which doesn't help.
- d.