Why are people still so foolish that they mention PR in their trade request titles?

[Halfdeck]

I find it hard to believe that mentioning PR in a post title would be considered a link scheme.

Nobody is claiming that using "PR" in a post title is a scheme. It's a marketing tactic designed to attract more trades. At the same time, you are leaving traces on the web that helps Google identify your site as a participant in a link pop manipulation scheme.

The point isn't about whether link trading is good or bad. It's about link trading like Sam Fisher.