We’re removing background images from the home and notifications timelines on web for all users. Now, background images are only available where logged-in users will see them publicly (Tweet pages, list pages and collections pages). You can find help center content about customizing your design and where it’s visible on Twitter here. - See more at: http://www.itecblaz.com/twitter-gets-rid-of-background-images-from-user-profiles/#sthash.W7QEiLJc.dpuf