Posted: 07/09/2014 at 15:31
Last year I removed every leaflet which had blight on - inspecting and removing them twice a day - and the plants continued producing well. And yes, if the fruits aren't affected then they're fine to eat.
Spread the plants out a bit if you can, get some air moving between them - it will help keep the leaves dry - blight loves warm damp leaves.
Don't compost blighted plants - I bag them and bin them.
And blight is a fungal infection - it spreads by spores in the air.