Acceptable ad: "I write code. If you need code, consider me because [short list of objective attributes about myself, related only to coding]." posted somewhere people looking for people to code go to find people to code. Consciously put there by someone that can be held accountable for choosing to post it. Doesn't evoke strong emotions, especially fear or hate, through barely related stories and imaginary. Doesn't contain any trackers.

Unacceptable ad: Everything seen everywhere.