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Online Geniuses

One of the largest digital marketing Slack communities with 53,000+ members, featuring active CRO and experimentation channels.

Overview

Online Geniuses is one of the biggest and longest-running digital marketing communities on the internet, hosted on Slack with over 53,000 members. The community covers the full spectrum of digital marketing including PPC, SEO, CRO, ecommerce, content marketing, and analytics.

For CRO practitioners, Online Geniuses offers dedicated channels for conversion optimization, A/B testing, and experimentation discussions. While the community is broader than CRO-specific groups, its massive membership means the CRO channels have significant activity and a wide range of perspectives from practitioners across different industries and company sizes.

The community's scale is both its strength and weakness. The sheer number of members means you can usually get answers to CRO questions quickly, but the signal-to-noise ratio can be challenging. Online Geniuses is best suited for practitioners who want CRO conversations within a broader marketing context, rather than a focused, CRO-only environment.

Key Features

  • 53,000+ member Slack community
  • Dedicated CRO channels
  • PPC, SEO, and ecommerce channels
  • Cross-discipline networking
  • Job opportunity sharing
  • Industry discussions
  • Active daily conversations

Pros & Cons

Pros

  • + Massive 53,000+ member community
  • + Get answers quickly due to scale
  • + Cross-discipline marketing perspectives
  • + Free to join

Cons

  • Not CRO-specific — broad marketing focus
  • High noise-to-signal ratio
  • Quality of CRO advice varies widely
  • Can be overwhelming with notifications

Integrations

Slack

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