For some time I've noticed that the Indent button on the forum post editor works to indent text but the indent is not preserved visually when you post the text:
Here's what it does in edit mode:

But once posted...

If I go back into edit mode, the indent is still there, and it's in the HTML code (here it is stripped down to its essence without the span/color and strong tags:
<p style="padding-left: 30px;">The <i>NRSV</i> is truly a Bible for all Christians!</p>
But it doesn't display properly.