We all know confession is good for the soul. In the Internet age, it turns out, it is also good for Web traffic. In the past few years, a growing number of websites have popped up offering visitors a chance to anonymously post, read and, in some cases, comment on people's deepest and darkest secrets. Originally secular, the sites, with names like DailyConfession.com and GroupHug.us, have even inspired some pastors to adopt the online confessional to engage congregants.
Some churches' sites, like that of Flamingo Road Church in Cooper City, Fla., receive regular traffic year-round. Others, like the one...