The US Second Circuit Court of Appeals in New York has ruled that the unauthenticated web page snapshots on archive.org1 may be entered as legal evidence (archived). This is in spite of the myriad of mischief surrounding the service, in particular archive.org's active "curation" and in general the unreliability most "Internet Archivers" have when it comes to taking aomplete and faithful snapshots with many servers sending different content to archiving services than they send to other web browsers.
Specifically archive.org ↩