How about using the voting to change font size? And if every user retained a unique id (maybe by using the IP), then the voting would change their font size fo

How about using the voting to change font size? And if every user retained a unique id (maybe by using the IP), then the voting would change their font size for every post. And the voting would go back to 0 over time. eg. 1 point an hour. And limit any ip to 1 message a second. And block double posting.