ICYMI: IAB Polska publishes nano and microinfluencer guide as trust data turns stark: IAB Polska released a practical guide on nano and microinfluencer marketing on March 19, 2026, as research shows only 30% of Polish social media users trust influencer content. https://ppc.land/iab-polska-publishes-nano-and-microinfluencer-guide-as-trust-data-turns-stark/ #InfluencerMarketing #NanoInfluencers #MicroInfluencers #SocialMediaTrust #DigitalMarketing