You have all seen them – you may have even appeared on one yourself – posters proclaiming the loss of a dear pet or relative. Although some disapprove of them for their intrusion on public space most would not dream of removing them in the hope that whatever was lost will be found. And then there are those who embrace them as a form of alternative art. Their alternative lost posters amuse and irritate with, quite possible, equal measure. We prefer to see the funny side – and so here are some of the best on the net.