[13]

The submission title is actually "txet lanoitcerid-iB", with a Right To Left Override control character at the front. The whole line is in reverse it just doesn't look like it when rendered in your browser. There's a variety of control characters in unicode which let you stack, reverse, raise and lower individual pieces of text as you desire.

‮.ekil skool yllaer ti tahw ees ll'uoy dna enil siht gnitsap dna ypoc yrT

[hayksaakian]

Interesting, I viewedmthe source of the page, and some of the tags are reversed too.

Is this an exploit/attack vector?

[cbd1984]

Anything that can confuse a person is a potential exploit vector.

That said, I don't know of any specific exploits which rely on this behavior.