I nod / acknowledge 99% of bikers...... The only people i ignore are the chavs on scooters that ride around with trainers on,no gloves and tracksuit tops ..... I HATE THESE PEOPLE !........ Weaving in and out of traffic with no sence of the highway code , They havent grasped the use of indicators . AAAAARRRRGGGHHHHHHHHH...... breathe in....breathe out.....breathe in .......breathe out....... Thats better, calm is restored ! I even nod to harley riders..... but they have their own rules which i think state they must only acknowledge other harleys