Google Penguin
Google Penguin was a 2012 Google system against link spam. Since 2016 it's part of Google's core ranking and works in real time.
Google Penguin was a system Google announced in 2012 to fight link spam: links bought, swapped or made in bulk to push a site up the rankings. Google says it was built into its core ranking systems in 2016.
For marketers, Penguin is the reason link building changed. Before it, a pile of cheap links could work. After it, the same links could sink you.
What changed in 2016
When Penguin joined the core systems, Google said two things changed. It became real time, so a site that cleaned up its links could recover soon after Google crawled its pages again, instead of waiting months for the next Penguin refresh. And it became more precise. Google said it now devalues the spam itself, where before it could drag down a whole site.
What counts as link spam
Google's spam policies list the usual suspects: paying for links, trading goods for links, excessive link swaps, automated links, keyword-stuffed links in guest posts and press releases, and low-quality directory links. Paid links are fine when they're marked as sponsored, so they don't pass ranking credit.
Links and AI answers
Links still help Google find and rank your pages, and Google's AI answers draw on pages Google ranks. But AI platforms also read the text of the pages they cite. A link buried in a spun article on a site nobody trusts adds nothing an answer would repeat.
For example, a mention of Kestrel Roasters in a respected food magazine's review, with or without a link, is something an AI platform can read and quote. Fifty links from made-up blogs are something Google ignores at best.
In AnswerOrbit
We never recommend links you pay or trade for. Sources shows the sites the AI answers actually use, and the Gaps tab lists the ones that name your competitors and not you. Those are the places worth earning a mention. See Sources.