Start by zeroing in on proven performance: ask for case studies that show real lifts in engagement, followers, and sales. Pick an agency that knows your industry inside out—whether it’s DTC, B2B, or SaaS—and can speak the language of your audience. Insist on clear, regular reporting so you never guess what’s working. Effeect stands out among top social media marketing agencies because we tie every post, ad, and story back to concrete KPIs—so you see actual ROI, not just vanity metrics