Count me as someone who rides so d@mn slow I've never noticed what it feels like to draft, either.

I've been on a couple of organized rides where some grouchy cyclists yelled at me for not loudly announcing my presence with a hearty "on your left" before passing them.

I, too, usually ride alone and am not really "up" on my group etiquette.

If your usually ride alone, how are you supposed to learn this stuff, by osmosis?

Having a bunch of bike-club folks act generally snobby & unfriendly to me doesn't exactly make you want to go out and join a club, either.

...in which case I still don't learn.