In the minutes following the shooting of Rep. Gabrielle Giffords (D-AZ) and members of her staff, the website operated by Sarah Palin that illustrated Gifford's 8th district with gun crosshairs drawn on a map was scrubbed from the internet.
The site, TakeBackThe20.com, was operating normally at 1:07 CST when I connected to obtain an image of the crosshairs map:
When I connected approximately one hour later at 2:10 PM, the site had been replaced with a webserver error, meaning that the webserver was answering but that the content upon it an hour earlier was not being served
Later, at approximately 2:45 PM, the server could no longer be reached at all. Clicks to it met with a DNS error, meaning that any clicks to TakeBackThe20.com would not find an underlying IP address.
While material on the site including the aformementioned map can be found elsewhere on Facebook and Twitter and other web sites, at press time, no image of the site was found in The Internet Archive at archive.org.