I use
AdBlockPlus in Chrome and never see those links. I
don't use AdBlock on Firefox and do see them there, mostly on gearslutz. I'm assuming therefore that Ad Block eliminates them.
EDIT: was just in gs and saw some links still there, even after adding Ad Block to Firefox. These are from an outfit called skiplinks, and they are not placed there by your browser but rather by the forum publisher itself, which receives payment in return. So it would appear that Gearslutz is actually allowing Skiplinks to embed those annoying links in the text so there's no way for users to remove them (they link to many sites, some of which you wouldn't want to block, such as e-bay).
I suppose it really a good thing - if you click on a link GS makes a couple pennies. But the out-of-context links are often hilariously inappropriate.