Blimey Paul, are you really such a grumpy old man? Nolacus was asking for advice about the original type of indicators and how they were mounted, not whether to fit them or not. That decision has already been made, but not because it's forced upon him. He just thinks it's a good idea. There was no talk of anything being mandatory until your outburst at Tippie's (apparently ridiculous) suggestion that indicators might be a good idea.
Maybe not indicating is a French thing. I did notice that many people didn't indicate when I last drove around in France. It was actually a little frustrating trying to guess what other drivers were doing.
I don't remember noticing a lack of indication in UK (where nolacus is), so I guess it's common practice there.
Almost everyone in my local area indicates, often when they don't need to (like when there's only one way they can go), so I think perhaps other drivers are expecting to see a flashing light.
Leg signals seem to be a European thing, but I'm not sure their meaning is universal. I saw a lot of bikers in Italy stick a leg out to acknowledge another biker coming the other way. It seemed to me that it's more of a social gesture than an indication of a turn. Nobody does leg signals here for any purpose and I've not seen them in UK either, so a car driver would just be confused if they saw one. They'd probably just think the bike rider was stretching out a leg cramp.
