Will someone please explain the blair witch project?

Would someone please explain what the *The Blair Witch Project * is? I've been reading reviews on Paranormal Activity and there comparing it to that. Where can I watch this movie onlinee?
Thankiesss :D

The Blair Witch Project is an American horror film released in 1999. The narrative is presented as a documentary pieced together from amateur footage. The film was produced by the Haxan Films production company. The film relates the story of three young student filmmakers (Heather Donahue, Joshua Leonard, and Michael C. Williams) who hike into the Black Hills of Burkittsville, Maryland to film a documentary about a local legend known as the Blair Witch, and subsequently go missing. The viewer is told that the three were never found, although their video and sound equipment (along with most of the footage they shot) was discovered a year later. This recovered footage is presented as the film the viewer is watching.

-Wikipedia

if you want to watch this go to movieforumz and type the blair witch project in the search box. you can watch the first or second movie