Direct

Allowed by default
http://images.wikia.com/divine-girls/images/thumb/7/7d/1~2_wisp_m.png/250px-1~2%20wisp%20m.png

Allowed by local whitelist
http://vignette1.wikia.nocookie.net/simpsons/images/8/80/Vmffosejtm.png/revision/latest/scale-to-width/320?cb=20150106090125

Not currently allowed
http://slot1.images.wikia.nocookie.net/__cb1409144585/common/skins/common/images/redirectltr.png