Limit 1 vote per IP Address?

Question

What I really want is to limit 1 vote per person but the next best thing i can think of is limit 1 vote per IP address to prevent malicious users/hackers from severely tempe

Answer 1

If you use IP addresses then you'll be limiting most companies to only one vote because they route all outbound internet traffic through a firewall or proxy server. We did this a couple of years ago and found that all AOL traffic came from only 5 ip addresses.