Archaeological finds indicate that this site already existed in the 12th century.

The site still exists, however it is run by Yahoo! mainly.

The original sites are often inaccessible to the public, or may even no longer exist.

Their site only exists because of other sites, they're nothing more than a search engine with voting.

This site no longer exists, as it eroded away into the river.

I just looked up "Neanderthals.com" and that site doesn't even exist.

Those sites still exist, however, including the one for the girl called Sparkle.

As of 29 November 2011, the site no longer exists.

The site of the ground still exists to this day, but association football is the sport primarily played on it.

For me that such a site existed was a bit of an eye opener.