== Who Knew (again) == 

 #Please do not revert other people's edits wholesale. When you do this, not only do you undo the changes you intended to undo, but you undo unrelated and genuinely useful changes made in the meantime. Doing this repeatedly is considered disruption and will lead to a block. The statement "already shaping up to be a radio smash" is unnecessary, because the single's already come and gone, and "reveals a different shade of P!nk to the sassy and controversial "Stupid Girls"" is a violation of Wikipedia:No original research. I've added a reference to an interview in which P!nk says "Who Knew" is about the death of friendship, so it's inaccurate to say it's about losing loved ones to drug abuse. 
 #See Talk:Who Knew about the now-removed "Music Video" section header, which was incorrectly capitalised anyway ("Video" isn't a proper noun in this context). 
 #Rather than removing the  tag from the article again, it would be more useful if you were to cite your sources for the information you have been inserting so that other editors can verify your work, as other editors have asked you to. Bear in mind that any editor may remove unsourced content from any article at any time; the obligation for providing references lies with those wishing to retain such content rather than those wishing to remove it. 
 #Wikipedia guidelines recommend uncoloured "wikitable" format for charts, not coloured tablabonita. Please see Wikipedia:WikiProject Music/Tables for charts for more information on how to format tables. 
 #The placement of Image:Whoknewcap.jpg opposite the infobox makes the article look messy, in my opinion. That's why I placed it below the infobox instead.