The question is - should the curtain just touch the floor, or should it hang so that it's clear of the floor?
To my mind, having it touch the floor means it will be more likely to remain wet and encourage the growth of mould. On the other hand if I leave a gap it may not 'keep the draught out', and it may billow inwards and stick to the occupant! On this last point, it is a fairly large shower area I'm enclosing - close to 1.5m x 1.5m - so the billowing inwards problem may not be an issue.
So, what's the normal practice when installing a shower curtain? Should it touch the floor or not?