Social proof
Social proof is the psychological principle that people follow the actions and opinions of others when they are unsure. For online stores, this means that reviews, ratings and testimonials increase trust and conversion.
What is social proof?
Social proof is a concept from social psychology, described by Robert Cialdini. The principle is simple: when we are unsure of what to do, we look at what others do. In the context of e-commerce, this means that potential customers are much more likely to buy when they can see that others have already bought and are satisfied.
Types of social proof in e-commerce
- Product reviews and ratings: Star ratings and written reviews directly on product pages. The most effective form of social proof in e-commerce.
- Testimonials: Quotes from satisfied customers, typically displayed on the front page or landing pages.
- Number sold: "Over 5,000 sold" or "Bestseller" signals popularity.
- Trustpilot/review portals: Overall company rating from third-party platforms.
- User photos and videos: UGC (User Generated Content) - customers sharing images with your products.
- Expert recommendations: Recommendations from professionals, industry media or influencers.
- Certificates and trustmarks: E-label, security certificates, payment provider logos.
- Real-time social proof: "12 are looking at this product right now" or "Last purchased 3 minutes ago."
Why does social proof work?
- Reduces uncertainty: Online, customers can't touch the product - reviews compensate for this lack of physical experience.
- Builds trust: Positive experiences from other customers signal that your shop is trustworthy.
- Aids decision-making: Detailed reviews help customers assess whether the product fits their needs.
- FOMO effect: Real-time social proof (high viewing, low stock) creates a sense of urgency to act quickly.
Social proof and conversion
Studies consistently show that social proof increases conversion:
- Products with reviews convert significantly better than products without.
- Products with 5-10+ reviews have higher conversion than products with 1-2.
- A mix of positive and a few critical reviews are perceived as more credible than 5-star reviews alone.
- Reviews with images have an even stronger impact than plain text.
How to use social proof effectively
- Make it visible: Display stars and number of reviews directly in the product list, not just on the product page.
- Ask for reviews: Send automatic follow-up emails after delivery and ask customers to review the product.
- Show trustmarks: E-mark, payment logos and Trustpilot rating in footer or checkout.
- Use it in ads: "4.8 stars from 200+ reviews" in your ads increases click-through rates.
Social proof in Shoporama
Shoporama has a built-in review system where customers can rate products with stars and write reviews. The reviews appear on product pages and in Google search results via JSON-LD structured data (AggregateRating and Review), so you automatically see star ratings as rich snippets. You can moderate reviews in admin and send automatic follow-up emails to collect more.
We know online marketing in Shoporama
We've been working with online marketing ourselves for decades. As the only shop system in the country, we have spoken multiple times at conferences such as Marketingcamp, SEOday, Shopcamp, Digital Marketing, E-commerce Manager, Ecommerce Day, Web Analytics Wednesday and many more.