Good idea, but in most cases impossible to do. Take it from me as I've been a tech'y for over a decade: Most (99.9%) interent providers assign you a different IP Address with each session, So they'll always be different from day to day (or even hour to hour in many cases).

Yes all these folks are aware of incoming IP addresses and could catch fraudulent posts if they happen during the same session, but definitely NOT from one day to the next.

The Strain Man

Quote Originally Posted by lampost
Also, do they try to prevent users from having more than one user acct? Like maybe one acct per IP address?