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Interestingly, it has been shown that at lower levels, rather than being detrimental, salt actually exerts a favorable influence on yeast fermentation, A series of studies have shown that the use of 0.5 to 1.0% salt in the sponge of a sponge-and-dough process resulted in reductions in the fermentation time, while at the same time producing a better quality bread than was obtained with a sponge containing 0.15% or no salt.