The node Need to turn off prints from module was approved and then Front-paged despite having a wide line inside a <pre> tag.

In the section Tags You Should NOT Use, Markup in the Monastery says:

At first blush, the <pre> ...</pre pair may look like an alternative to code tags... BUT DON'T USE IT HERE chiefly because <pre>...</pre> tags will not wrap lines that are too long for the viewer's browser window.

In the past several months it's been a common occurrence to see the front page layout messed up by a wide line inside a <pre> tag in a node that's been approved and Front-paged. By comparison, this happened rarely a couple of years ago due to better moderation. I recall logging in and finding a private message about needing to fix up a wide <pre> line in one of my nodes.

<pre> tags have been discussed previously in <pre> vs. <code> tags.