Nope, it's one bit extra entropy per character. The attacker must try all possible capitilazations of each word (horse, Horse, hOrse, HOrse, etc). You've doub

Nope, it's one bit extra entropy per character. The attacker must try all possible capitilazations of each word (horse, Horse, hOrse, HOrse, etc). You've doubled the character set so it's not negligable.