A = 1
B = 2
Case doesn't matter.
Then the value of a post is the product of all letters in the longest word in the post.
Alternatively, it might simply be the highest value word in the post, not necessarily the longest (e.g., "babe" is lower value than "zoo.")
Edit: no it must be the longest word. "Product" is higher value than "character" but "character" determined the score. I guess highest value is probably used as a tie breaker though.