From Katy Perry, Calvin Harris To Justin Bieber: Top-Ten Twitter Feuds

As Katy Perry takes a pop at Calvin Harris after the producer pulls out of her UK tour, Gigwise has taken a look at some of the most memorable Twitter feuds.

Since the social network was conceived, it's become an unassuming soap box for music stars to vent their anger.

Gigwise's has recalled some of the best, featuring the likes of Justin Bieber, Lily Allen, Courtney Love, 50 Cent, Foals, Lostprophets and Travis Barker.

There is also a particularly special Twitter rant from Axl Rose, who managed to write a 787 word tweet condemning the media, and Justin Bieber, who revealed the contact details of his "worst enemy" online.

Can you think of any other Twitter feuds? Post yours by filling out the comment form at the bottom of this page.