Collaborating with other Tumblr users can be a great way to reach new audiences and grow your following. Here are a few ways that collaboration can benefit your Tumblr growth:

1. It allows you to reach a new audience: By collaborating with other Tumblr users, you'll have the opportunity to reach their followers and potentially gain new ones. This can help you expand your reach and introduce your Tumblr to a new audience.

2. It helps you build relationships: Collaborating with other Tumblr users can also help you build relationships and establish yourself as an active member of the Tumblr community. By working together with other users, you can build connections and potentially collaborate on future projects.

3. It can lead to new opportunities: Collaborating with other Tumblr users can also lead to new opportunities, such as guest posting on other blogs or being featured in Tumblr round-ups. These types of opportunities can help you reach a wider audience and potentially gain new followers.

4. It can make your content more diverse: Collaborating with other Tumblr users can also help you add diversity to your content. By working with other users, you can create content that combines your unique perspectives and styles, which can be more interesting to your followers.

Overall, collaborating with other Tumblr users can be a great way to reach new audiences, build relationships, and add diversity to your content. So if you're looking to grow your Tumblr following, consider collaborating with other users and see the benefits it can bring.