The 24-Hour Check:

• At least 10-30 new posts
• Most posts getting 5+ comments
• Top posts reaching 50+ upvotes

For example, r/Businesshub has 26k members but the most recent post is from 6 months ago. This is a and example of a dead subreddit you'll want to avoid.

Check Active Users:

You can use subreddittraffic.live to see when a subreddit is most active. This helps you know when to post for maximum visibility.

Look for subreddits that have at least 100+ members online and active during peak hours. This shows there's enough engagement to make posting worthwhile, regardless of total subreddit member count.

Search for these buying signals:

• "Where to buy"
• "Best [product] for"
• "Worth the money"
• "Recommendations"

Watch what gets shared:

• Pictures of their purchases
• Price comparisons
• Reviews of products
• Questions about specific brands

If you see at least 2-3 of these types of posts in the subreddit, you've found a one with real buying potential.

When links are completely banned:

Take r/Entrepreneur as an example. You can't post any links without mod approval first. This isn't because they hate businesses, it's because spammers take advantage of the community. In cases like this, focus on sharing your knowledge and value posts instead.

When links are sometimes okay:

Many subreddits follow the "10% self-promotion rule." This means you can share your own content if 90% of your other posts help people. Keep in mind that although the rules may allow it, regular users might still downvote business posts. Check the last 10 business-related posts to see how the community actually responds.

Here's what to check before posting:

• Search for "link" in the rules. Some communities ban all outside links, even helpful ones
• Look at business posts from the last month. See if they're still up or were removed
• Check the comments on business posts. Notice if people engage or just complain about self-promotion

The safest approach:

If you're not sure and there aren't any rules about it, message the mods first. Say something like "I have a blog post about X that answers someone's question. Are we allowed to share relevant resources when helping people?" Their answer will tell you exactly what's allowed.

RedSim analyzes millions of Reddit comments to find connections between subreddits. Just type in a subreddit you know your customers might be in, and it shows you other subreddits where the same people are active in.

How to use it effectively:

• Start with a subreddit close to your niche
• Look for smaller related subreddits (they often have more engaged users)
• Check each suggestion using our 24-hour activity test from above

This tool works best for subreddits with less than 1 million members. The bigger subreddits tend to have too many random connections to be useful.