.. the Wayback Machine had just received a huge update.
According to Brewster Kahle:
Now we cover from late 1996 to December 9, 2012 so you can surf the web as it was up until a month ago. Also, we have gone from having 150,000,000,000 URLs to having 240,000,000,000 URLs, a total of about 5 petabytes of data. (Want a humorous description of a petabyte? start at 28:55) This database is queried over 1,000 times a second by over 500,000 people a day helping make archive.org the 250th most popular website.
In the past I’ve had my doubts about the commitment the Internet Archive has toward this service, but with a major update in 20011 and another major update this year, the Wayback Machine appears to be on a solid footing.
Wayback Machine link: http://archive.org/web/web.php