possible way to stop spam bots

[blackfalcon]

Here is my suggestion. If there could be a setting that we can enable so that after a random number of posts (the admin determins the frequency), the next post you need to enter an image varification, and you need to enter it to make a post or send a PM. A bot, cant do this, so once a bot makes like 20 posts, it will need to enter a varification. Or it could be a question. Kind of like what guests need to do inorder to post or search on some boards.