Reddit Fights Spam with LLMs, a Double-Edged Solution

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Key Takeaways

1Reddit uses large language models to combat spam, a problem exacerbated by these same technologies.

2Every day, Reddit blocks 23 million views of spam and identifies 25,000 new unwanted content.

3The use of LLMs has allowed Reddit to reduce spam exposure by 20% in three months.

💡Why it matters — The effectiveness of LLMs in spam detection could transform online moderation, but it requires a balance with human intervention.

The Rise of Spam Fueled by LLMs

With the increasing accessibility of large language models (LLMs), the spread of spam on the Internet has become easier than ever for malicious actors. In recent years, anyone who has spent some time online has likely noticed that spam and bot-generated content have reached unprecedented levels.

Reddit Strikes Back with LLMs

In response to this challenge, Reddit has developed LLM-based tools to combat spam, much of which is ironically created by these same models. In a context where artificial intelligence is ubiquitous, platforms have no choice but to respond with similar means. Reddit reports that it blocks 23 million views of spam daily and detects about 25,000 new unwanted posts and comments each day.

Enhanced Detection Tools

While social platforms have long been developing automated tools to reduce spam, Reddit claims that its new tools surpass previous ones in terms of detection. According to a blog post from the platform, LLMs are used to identify fraudulent behaviors and artificial hypes, often subtle and coordinated, that earlier systems failed to detect. Thanks to these improvements, Reddit has managed to reduce user exposure to spam by 20% between January and March compared to the previous three months.

AI Moderation and Its Implications

Other platforms like YouTube, Meta, and Instagram allow users to post AI-generated content, provided it is clearly labeled. TikTok goes even further by allowing users to choose the amount of AI content they wish to see. If platforms can detect AI-generated content more quickly, they could also more effectively flag problematic content, such as hate speech.

The Balance Between AI and Human Moderation

However, experts emphasize that for content moderation to be truly effective, it must combine AI with human intervention. Technology alone cannot yet replace the nuance and human judgment necessary to handle sensitive or complex content.