Joe Pulizzi can be reached all over the Internet, but try here first.
Contact Joe Pulizzi at joe [at] zsquaredmedia.com (replace at with @)
Facebook: Joe Pulizzi
LinkedIn: Joe Pulizzi
Google+: Joe Pulizzi
For details on hiring Joe to speak at an event, email Pam Kozelka at pam [at] zsquaredmedia.com.
To get content marketing information from Joe on a regular basis, try the free stuff page.