Ways not to lock your bike

When i was in Florence last year i saw lots of bike porn left with the bare minumum of security, this Alan being one example

I was amazed at Palermo for that. Bloke pulls up on brand new Honda Transalp, leaves engine running, goes into bakery to pick up nommy biscuitgoods, stops for a chat for a while. This in supposedly lawless Sicily. After that, I noticed that no one seems to lock anything there.

I <3 Sicily. (And Florence too, now you mention it - used to go there once or twice a year throughout my childhood).