Bringing over from the Q&A thread:
The website WFTV showed in the video and indicated Casey visited, "over a year ago" is:
http://www.get-involved.com/
The story aired in September 26, 2008.
The link to missing children at the above site is a tool that was created Memorial Day Weekend 2006. The tool allows (1) a view of missing children by geographic location, and (2) adding a missing child to your MySpace friend's list to increase visibility to their cause. So, the timeframe we're talking about here for Casey to have visited the site is June 2006-September 2007.
Consider that Trenton Ducket went missing August 27, 2006 and the case obviously had a tremendous amount of local media attention.
Given Casey's proclivity for all things MySpace. Perhaps she ventured here to add Trenton's missing person file to her own MySpace friends list. Perhaps that has already been established, or if not, would be simple enough to confirm or debunk. Just a thought...