Yes, you obviously cannot join random groups and expect people to reply when you reach out to them.

You’ve gotta play smart.

This should be your research process:

1. LinkedIn Search: Use keywords related to your target audience's interests
2. Competitor Research: See which groups your competitors' customers join
3. Customer Interviews: Ask existing customers which groups they're active in
4. Industry Publications: Check which groups industry publications recommend
5. Social Listening: Monitor where your target audience discusses challenges

Group quality you should aim for:

Excellent Groups (Must Join):

• 50k-200k active members
• Quality posts and discussions
• Your target job titles actively participating
• Professional group management

Like this one for Digital Marketing, SEO, and AI:

Good Groups (Can Join):

• 10k-50k members
• Decent posts
• Some target job titles present