If Romney does it correctly, millions more will view the page than if he had not publicized it.
Then they can take it down and move on to another publicity campaign.
“Hey everybody, look at this site I don’t approve of!”
The site was down before the newspapers reported about it. As soon as Romney heard about it, it was taken down.
The only reason we know what was on the site is that people are posting it and newspapers are reporting it.
And probably someone has a cache of it somewhere.