BBC did same images.google query as I did?

[ewx]

and - could they perhaps be related?

Comments

[keirf.livejournal.com]

http://images.google.com/images?q=padlock&hl=en&btnG=Google+Search ?

Which also incidentally calls up a "one of the images is not like the others".

[ewx.livejournal.com]

Indeed, that's probably what I used, though I can't say I remember exactly.