Walking through Moscow this past spring I cut through an old Nobleman's estate which had been turned into a public nature park, and there found a small bridge across a narrow and icy winter stream.  Attached to the bridge railings were locks, hundreds of them, each inscribed with the names of the lovers who attached them in order to show their affections.  It was an odd sight at first, but once you take a closer look at things, it seems a unique way to demonstrate one's feelings ...and apparently the authorities agreed, as many looked like they had been there for some time.  The obvious question of course is if things don't work out, do you come back and cut down your lock?