Once you have a collection of subreddits that are related to your niche, the next logical question is, what criteria should you use when determining which subreddits to join? The thing is, you don’t want to waste time in any subreddit that is not going to bring you closer to achieving our Reddit goals.

How Relevant Is It?

Relevance will always be at the top of the list. There’s just nothing to be gained spending time in a subreddit that is not relevant to the goals and objectives you’re trying to achieve on Reddit. Furthermore, if you submit a post in a subreddit that is not relevant to the topic, the post is going to be deleted, and doing that can get you banned from posting in that subreddit.

Sometimes, it is advantageous to submit your posts to broader categories that may only be somewhat relevant to your product or service. This allows you to expand your audience. For example, an article such as “10 Steps to Increase Your AdWords ROI” may also be posted to the startups or small business subreddits because most business owners use AdWords as a traffic source. Furthermore, you’re providing information to a group that might find it interesting.

To be safe though, before you submit a post in a subreddit that is not directly relevant to your niche, check though the posts that have been submitted to see if similar posts have been submitted in the past, and how well they have performed. You may also change the title of the post to make it more relevant to that subreddit. For example, you could submit the same AdWords post to /r/smallbusiness by changing the topic to:

The Top Ten Ways Small Business Owners Generate More ROI with AdWords.

Now, some people make the mistake of just looking for the largest subreddits and focusing on them. If you’re just starting out on Reddit, you shouldn’t simply focus on the largest subreddits. It would be a mistake to ignore the smaller subreddits, especially those that are active. You need to start out with the most relevant niche communities and then build up to the larger, more general subreddits over time.

Of course, how general will also depend on how niche your product or service is. If you have a very niche target market, you may want to remain in the most relevant communities for your business. And that is because popularity on Reddit generally dilutes the content quality of that subreddit. When subreddits are in the 1,000 – 50,000 user range, they’re easier to moderate, have more relevant and in-depth content and higher content quality.

For example, if you’re in a very narrow niche, you may want to join a subreddit with even 1,000 subscribers if that subreddit is active and it is highly relevant to your niche. But, no matter how large a subreddit is, the most important criteria is that the subreddit is active. And you can find out just how active a particular subreddit is by checking out the last time a post was submitted in that subreddit. Simply sort the posts using the NEW tab at the top.

How Active is it?

The next factor to consider is how active a particular subreddit is. And we can find out just how active a subreddit is by checking the date of the most recent post. If the last post was over 72 hours ago, that subreddit may not be worth your time.

Size

The number of subscribers that are in a particular subreddit is another significant factor. To check the number of subscribers in that subreddit, look at the number of readers in the sidebar. Depending on how directly relevant the subreddit is, you may not want to waste your time marketing in a subreddit with less than 1000 members, especially if it is not very active.

On the other hand, being in a smaller subreddit means that you’ll be much less likely to see your content immediately get drowned out by other new posts and pushed to the bottom, which is something that tends to happen with the larger subreddits. Even if you may not get many upvotes for a few hours, being in a smaller subreddit allows you to remain on the hot page of the subreddit, or the new page simply because there won’t be any content there.

The best strategy then, is to try and post to a good range of different subreddits, including some that are smaller and some that are larger. And this should depend to some extent on the specific goal of that particular post.

In addition, take a look at the submitted posts to see what type of discussions are taking place within that subreddit. Take a look at the most popular posts. This will ultimately determine whether a particular subreddit would be worth joining, or whether it would be a waste of time.

Always read the sidebar of the subreddit and the posts that have been submitted to that subreddit if you want to determine whether the subreddit is relevant to your business. That’s the criteria that you would typically use to determine whether you should join a particular subreddit or not.