This question already has an answer here:
Please keep in mind that the topic or quality of this post does not matter. If you think the answer is weak, that's fine, irrelevant, down vote it. What matters is the fact that a link that was posted is redirected.
I posted this
but it now takes you to this
I appreciate that the SE sites exist solely because someone is making money, but I feel this is taking it too far. That's not my own "affiliate" link. If it were, I would accept the change. However, it's not. Pollute the site with advertising all you want (that's to be expected), but don't alter user's post!