BBC World has launched some inventive new advertisements. The billboards, appearing in city centres, give passersby the opportunity to cast a vote via SMS with the running tally of votes visible to all.
The topics tend to be quite provocative: one showing American soldiers in Iraq gives the voting options "occupier" or "liberator" whilst another asks if the West should "befriend" or "beware" of China.
(Photo posted on flickr by LiveU4 and used here under a creative commons license. Thanks for sharing LiveU4!)