The right wing noise machine thinks their followers are stupid. Threads like this seem to be evidence they are right.
I looked into it myself earlier, it appears to be a false claim. My dad fell for it too. Would be kinda nice if it was true though, I'd convert.
This is false. Only Religious groups that are also exempt from Social Security for religious reasons, will be exempt. At this point the only groups that qualify are Amish and Hutterite Religious groups. http://www.snopes.com/politics/medical/exemptions.asp