Do a Google search on Altavista to learn about it.
Seriously...I haven't used Altavista since the days where you could only find MP3s on FTP sites. That actually used to be my search engine of choice though. Back when the other options were pretty much Lycos and Dogpile.
Anyone remember those little square hard discs that came between regular hard discs and cd-rs? I thought that was the way of the future back in my graphics class in the late 90s.