Reviews, Directories and Reddit: The Off-Site Signals Quietly Feeding AI Answers

When an AI tool recommends a business, it isn't only reading that business's website. It's reading what everyone else says about it: reviews, directory listings, "best of" articles, forums such as Reddit, YouTube and LinkedIn. These AI search citations often carry more weight than your own pages, because they're independent. If you want AI to recommend you, you need to be present and well described in the places AI trusts.

Here's what the research says about where AI looks, what our own data shows for agencies in New Zealand, and how to build these signals the right way.

Where AI tools look

Two large studies show how much AI relies on third-party sources.

Profound analysed around 680 million citations across ChatGPT, Google AI Overviews and Perplexity between August 2024 and June 2025. Reddit was the most-cited domain on Perplexity (6.6% of citations) and Google AI Overviews (2.2%), and the second most-cited on ChatGPT. YouTube, LinkedIn and Quora ranked highly for AI Overviews, and review sites such as G2, Yelp and TripAdvisor appeared among Perplexity's top sources.

Ahrefs studied 75,000 brands and found that branded web mentions had the strongest correlation with visibility in AI Overviews (0.664), roughly three times stronger than backlinks (0.218).

Buyers notice these sources too. In G2's 2026 research, 45% of software buyers said citations from review sites were the most confidence-inspiring signal in an AI-generated answer.

What we found for agencies in New Zealand

The sources AI relies on vary by industry, so we looked at our own. In our DigitalArchitect® analysis of AI answers about growth and search agencies, the most-cited domains weren't Reddit or Wikipedia. They were agency directories:

The lesson isn't "get on Clutch". It's that every industry has its own small set of sources AI leans on. For a tradie it might be Google reviews and local directories; for software it's G2 and Capterra; for a consumer brand it may well be Reddit. You need to know yours.

The four off-site signals that matter

1. Reviews

Reviews are independent evidence of quality, and AI treats them that way. Volume matters, but so do recency, detail and where they sit: Google reviews for local searches, and the specialist review sites in your industry.

2. Directories

Directories organise businesses by category, location and specialism, which is exactly the structure AI needs to answer "best X in Y" questions. A complete, consistent directory profile with reviews and case studies gives AI a ready-made summary of your business.

3. Lists and articles

"Best agencies in New Zealand" and "top accountants in Christchurch" articles are heavily cited because they answer the exact question buyers ask AI. Being included, with accurate details, puts you in the source material.

4. Forums and communities

Reddit, Quora and industry forums carry real people's opinions. AI tools cite them because they're candid. A genuine recommendation in a relevant thread can carry more weight than your own home page.

How to build these signals the right way

Find out which sources AI cites in your industry

Run the questions your buyers ask in ChatGPT, Gemini, Perplexity and Google, and note every source cited. Within an hour you'll see the five or ten domains that matter for you. Yesterday's guide to checking AI Overviews shows how to record it.

Claim and complete the profiles that matter

Claim your Google Business Profile and the directories that showed up. Fill in every field, use the same name and description everywhere, add case studies and link back to your site. Consistency here also strengthens your entity signals.

Make asking for reviews a habit

Ask every happy client, at the moment they're happiest, with a direct link. Respond to every review, good or bad. Steady, recent reviews beat a burst every few years.

Earn your place in lists

Find the "best of" articles AI cites in your field and contact the authors with accurate, useful information: what you do, who for, and proof. Some will update their lists; others will include you next time.

Take part in communities as yourself

If your buyers use Reddit or industry forums, have your senior people answer questions genuinely and under their own names, within each community's rules. Help first. Promotion gets removed and remembered.

Use video and LinkedIn

YouTube and LinkedIn both rank among the sources AI cites most often. Short, useful videos with transcripts, and LinkedIn posts from your senior people, add credible mentions in places AI reads. That's where Storyhouse, our creative team, comes in.

What not to do

Never buy reviews, post fake ones, or create accounts to recommend yourself on Reddit or anywhere else. It breaks platform rules (Google's review policies, for example, prohibit offering incentives for reviews), it can breach consumer law, and AI tools and buyers are increasingly good at spotting it. Confident, factual businesses don't need to fake their reputation. They need to make the real one visible, and keep it current, because a profile last updated three years ago tells AI and buyers the same thing an empty one does.

Where this fits

Off-site signals sit alongside your website in the full search stack. Our search team works on both, and inside a Growth System, DigitalArchitect® identifies which sources AI relies on in your market and where your competitors are ahead, before we decide where to focus. We're running the same directory and review plan on Growth Partners itself.