Yes, there is a Flat Earth Society. Here is how Flat Earth Wiki describes their website:
"This website is dedicated to unraveling the true mysteries of the universe and demonstrating that the earth is flat and that Round Earth doctrine is little more than an elaborate hoax."
Apparently, the members of the Flat Earth Society haven't heard Stanly Freberg's song, It's A Round Round World!
It is a myth that Christians used to believe the world was flat prior to Columbus. Here is what Jeffrey Burton Russell has to say about this myth:
"No doubt some Christians did believe the Earth was flat, but not any educated people. A flat Earth seams to have been commonly believed in very ancient times. The ancient Egyptians believed the Earth was flat. But most Greek and Roman philosophers and geographers - for example, Pythagoras (570-495 B.C.), Eratosthenes (276-194 B.C.), and Ptolemy (A.D. 85-165) - were confident that the Earth was round. Eratosthenes even measured its circumference to within 15 percent of the modern figure. So what happened? Did Christianity take over and suppress this ancient knowledge? Not at all. Over a hundred Christian writers discussed the shape of the Earth from the third to the fifteenth century A.D. During this time, a period of twelve hundred years, there were just two who asserted the Earth was flat and more than a hundred that asserted it was round." (Exposing Myths about Christianity, by Jeffrey Burton Russel, pages 142, 143).
The Bible never says the Earth is flat. To the contrary, in Isaiah 40:22 the biblical writer talks about 'he that sitteth on the circle of the Earth."
The day will come when all myths will be exposed - including the myth that the earth was formed by some Big Bang 15 billion years ago. The Bible says: "In the beginning, God created the heaven and the earth." - Genesis 1:1.
Recommended reading (my posts):
Cold Fusion: Nuclear Energy Without the Drama
The Cambrian Explosion: The Evolutionist's Worst Nightmare
The Big Bang Theory: Debunked!
You may also want to check out this very informative audio message by W. J. Mencarow:
6 Day Creation and the Presuppositions of Science: How Important is Creationism?
