Downvotes require a karma threshold (of 500 IIRC). BTW, whatever you do don't overuse the 'flag' feature on stories as it seems when this is revoked it is perm

Downvotes require a karma threshold (of 500 IIRC). BTW, whatever you do don't overuse the 'flag' feature on stories as it seems when this is revoked it is permanent! I lost mine when trying to encourage news other than the passing of Steve Jobs.