From the announcement:
While the adage goes that nothing ever disappears from the internet, anyone who created a Geocities site, or used their old university servers (or forgot to pay to renew domain registration) knows that more often than we’re led to believe, stuff goes away and we can’t find it anymore. The Wayback Machine has been a go-to for those looking for lost content and sites on the internet, but until now the search feature has required you to know the exact URL for the site you are trying to track down. This requirement is changing, with the launch of their new Beta search function.
Read full post here.