I would have to see more facts...
I would think there would need to be more intent shown than to simply go to a web site once...
Heck, people accidentally get redirected to porn websites all the time. Who's to say that the individuals displayed in the pictures there are of age or not??? (Even here in the zone it happens from time to time that a link gets corrupted or re-directed to some crazed porn site)
With all that said, The feds need to focus on the people setting up the pornographic web sites.
Scott Evil