Originally Posted by genejockey

If I'm riding the bike with the Fulcrum wheels, I just coast for a second when I'm right up behind them, and let the 'nest of rattlesnakes' buzzing alert them.

This is for those rare moments when I pass others.

My personal preference, as someone who is more often passed than passing, is for the passer to make some noise while behind me, rather than getting beside me and suddenly saying, "Hi!" Cough, pant, let your freewheel buzz, fart - just let me know you're there.