Yahoo! acquired AltaVista in 2003. Yahoo! has announced several of the upcoming product closures. AltaVista will shut down on July 8, 2013.
The announcement suggests that people visit Yahoo! Search “for all your searching needs”. That’s one alternative to AltaVista. I suspect that most people are probably using Google for their “searching needs”. Bing is another option.
Typically, when a company shuts down something that had been offered for years, there is some public outcry from the people who are currently using it. Most of the news I’ve read about AltaVista expresses surprise that it has survived for this long.