Where to promote your brand for free: 26 platforms, ranked by whether AI engines actually read them

Most lists of "free platforms to promote your brand" are sorted by domain rating. That is the wrong sort order, and it produces lists with Shutterfly on them and YouTube missing.

Here is the list sorted by something that matters: whether the platform is a place AI engines actually read when a customer asks a question about your category, and whether it suits your kind of business.

The link argument does not survive contact with the facts

The usual pitch is that a big domain lends you its authority. Check the markup and that mostly disappears. Reddit, Quora and most forums mark outbound links nofollow. Every link on LinkedIn, Facebook and Instagram is nofollow. YouTube description links are nofollow. Medium adds both nofollow and ugc. Substack is a genuine exception — its links carry no nofollow or ugc attribute at all.

So as a link-building strategy, almost this entire list is weak by design. That is not a secret; it is how these platforms have protected themselves from spam for fifteen years.

But that argument is about the wrong search engine

Here is the part that changes the conclusion: AI engines do not use the nofollow attribute. It is an instruction to a link-graph crawler about whether to pass ranking credit. An engine assembling an answer is reading pages and citing sources; there is no PageRank being withheld, because there is no PageRank involved.

Which means the platforms that are weakest for link building are, right now, among the strongest for being read and quoted. Peec AI's analysis of 30 million cited sources across ChatGPT, Google AI Mode, Gemini, Perplexity and AI Overviews found Reddit, YouTube, LinkedIn, Wikipedia and Forbes to be the most-cited domains, with Yelp, G2 and Facebook also prominent. Every one of those marks its outbound links nofollow.

That is the whole reason to revisit this list in 2026. Not borrowed authority. Being readable where the reading happens.

Six platforms cover almost any business

If you do nothing else, do these. They are not category-specific, they are where questions get asked, and five of the six are read heavily by the engines.

Reddit and YouTube are the two most-cited domains in AI answers. LinkedIn climbed the citation rankings sharply through 2026. Quora is structurally the right shape — a question with a complete answer under it is exactly the unit engines retrieve. Google Business Profile is the spine of every local AI answer. And one publishing home, on Substack or your own domain, gives the others something substantial to point at.

If you serve a local area, start with the profile

The gap between traditional local visibility and AI visibility is larger than almost anyone expects. SOCi's 2026 Local Visibility Index, covering more than 350,000 locations across 2,751 multi-location brands, found only 1.2% of locations were recommended by ChatGPT, against 11% by Gemini and 7.4% by Perplexity — while the same brands appeared in Google's local 3-pack 35.9% of the time. Local AI visibility is up to 30 times harder to earn than a local pack slot, and strong traditional performance does not carry over.

The Business Profile is free, takes an afternoon, and is the input those answers are built from. It is the highest-return item on this page for anyone with a service area.

How to read the table

• Best for is the honest answer to "does this suit my business?" Roughly half of these platforms are excellent for someone and a waste of time for everyone else.
• AI citations is how often engines cite the domain, from the citation studies above — not a guess at how good the platform is.
• Links is the outbound link treatment, so you can stop expecting ranking value where there isn't any.
• Effort is ongoing commitment, not setup time. A profile you claim once is Low. A community where you have to earn standing is High.

Two rules that apply everywhere

Republish with a canonical tag, or don't republish. Medium, dev.to and Hashnode all let you set a canonical URL pointing back to the original on your own site. That is what stops a syndicated copy from competing with the page you actually want to win. Substack has no canonical control, so it gets original work rather than duplicates.

Participate before you promote. Every community platform on this list polices self-promotion, and the enforcement is not subtle — Reddit's long-standing guidance is roughly nine genuinely useful contributions for every one that mentions you, and individual subreddits are stricter still. Content that reads as marketing gets removed, and removed content is invisible to engines as well as humans. This is also why we draft replies for you to post from your own account, and never post as you: bulk posting is exactly what gets accounts banned.

Keeping this list honest

This page is maintained rather than published once. Platforms move — LinkedIn's citation share climbed sharply in a single year, and the studies underpinning these rankings get rerun. When a platform earns its place or loses it, the table changes and the date at the top changes with it.

If a platform is not in the table, it is usually because we could not find evidence it does anything for a business. That is a deliberately higher bar than "has a high domain rating and accepts signups".