Currently it is impossible to use http://paste.kde.org through the pastebin widget as the address points to http://kde.org. This bug exists since KDE 4.8.x, strange that nobody has reported that yet. This could be done as a junior job.
Could actually be related to bug 289647
Git commit f1e66873c6f12002390c31ee1373f550883d98fc by Feng Chao. Committed on 06/04/2013 at 12:02. Pushed by fengchao into branch 'master'. Use paste.kde.org as default pastebin text server. REVIEW: 109881 M +12 -2 applets/pastebin/pastebin.cpp M +1 -0 applets/pastebin/pastebin.h http://commits.kde.org/kdeplasma-addons/f1e66873c6f12002390c31ee1373f550883d98fc
Git commit 996ca83f75aa2525aed1700f10d9a6e7a71d3bca by Feng Chao. Committed on 10/04/2013 at 15:25. Pushed by fengchao into branch 'master'. Change KDE pastebin service name from kde.org to paste.kde.org. M +1 -1 plasma/generic/dataengines/share/backends/kde/metadata.desktop http://commits.kde.org/kde-workspace/996ca83f75aa2525aed1700f10d9a6e7a71d3bca