Feat tags are completely unnecessary unless it was originally a solo or there are multiple duet versions. Let's not clog up the shoutbox of another great song with pointless nitpicking over tags please.
Great tune. Nice to see Eminem return the favour after 'Won't Back Down'.
Also, I hate all the 'feat.' tags put in the track name. The name of the track is 'Here Comes the Weekend'. If you want to be proper wouldn't 'P!nk feat. Eminem - Here Comes the Weekend' be better?