Windscreen wiper blades and scuffing

[Trillipse]

My windscreen is lovely, but the blades seem to leave almost "scuffingesque" impressions on it. Do i need to replace them, or should i attempt to clean or polish them - i seem to recall someone mentioning vinegar in this respect. any ideas?

[Toureman]

Everytime you wash your car, using car shampoo I hope, give the rubber blade of your wipes a good clean with the sponge, thats all it takes, if this does not work your wiper blades need renewing.

Vinega is for chips not cars!

[Remeboy]

Trillipse, When you park up, make a habit of lifting the Wiper Arms off the Screen. The pressure on them makes the Plastic/Rubber Blade miss-shaped and stops the sqeegy effect.