The Barna Group has a new study out and, like many of its other findings, the news isn't very good. This one explores how orthodox religious terms (especially "born again") are misunderstood and misused by the public. Here's the article's basic point --
"For instance, one-quarter of those who call themselves born again did not meet the Barna Group criteria for born again – which generally meant they rely upon something other than God’s grace as their means to salvation."