I've looked around the WordPress Dashboard and I can't seem to find any way to limit comments to a certain number of characters. If I could somehow limit the number of characters maybe I would not get so much computer bot generated gibberish spam comments that run to thousands and thousands of characters.
Right now I am getting about 30 a day that are marked as spam and each one seems to be composed of randomly generated URL hyperlinks plus gibberish sentences running around an average of 600 to a thousand words each. It's just a pain to scroll through them all and delete the spam every day.