Ratter.com has been doing regular articles about the Zodiac Killer. The latest article features Ross Sullivan, who is my personal favorite Suspect for reasons seen here:
http://zodiackillersite.com/viewtopic.php?f=109&t=2300
Here's the Ratter article:
http://ratter.com/this-mans-brother-is-not-the-zodiac-killer-we-asked-1702397797
