Prayer Labyrinths?

Does anyone know anything about Prayer Labyrinths? I came across this phenomenon in January at a Methodist church in Colorado. Since then I have seen prayer labyrinths popping up all across the country and in Europe. I do not yet know what to make of it but I am intrigued. Anybody have any knowledge or experience about Prayer Labyrinths?

Here is an online pray labyrinth:

http://www.yfc.co.uk/labyrinth/online.html


Here is some information on prayer labyrinths:

http://web.ukonline.co.uk/paradigm/discoverframe.html

http://www.sanpedrocenter.org/prayer_labyrinth.htm

http://www.lcms.org/pages/internal.asp?NavID=6641

http://nationalcatholicreporter.org/update/nt021605.htm

http://www.challies.com/archives/000368.php