Which of the following are unique features of Reddit? Select all that apply.

The correct options highlight Reddit's distinct characteristics. On Reddit, the primary mode of engagement is subscribing to communities (subreddits) based on shared interests, rather than following individual users as is common on other social media platforms. This fosters interest-based discussions. Additionally, Reddit employs a unique "karma" system, where users accumulate points for upvotes on their posts and comments. This system incentivizes quality contributions and community engagement, influencing a user's perceived reputation within the platform. The incorrect option states that comments and posts are seen based on algorithms. While algorithms do play a role in content visibility on Reddit (e.g., "Hot," "Top," "New" feeds), this is not a unique feature; most social media platforms use algorithms to determine content visibility.