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With 6.6 million mentions on Reddit in 2021, cryptocurrency was the most popular topic.

In a record-breaking year for Reddit in 2021, cryptocurrency was the most popular topic.

On the social media site, which has over 430 million active users across 100,000 communities, the term finished ahead of 'gaming' and 'sports' as the most viewed topic in 2021.

"There were a lot of debates on Reddit in 2021, but none more prevalent than cryptocurrencies," the company claimed in its annual Reddit Recap, which looked at data from January 1 to November 9 of that year.

"Reddit has been home to over 500 bitcoin communities for over ten years." Reddit continues to be the hub for cryptocurrency aficionados as more redditors participate in conversation, whether seeking knowledge, help, or to share huge triumphs."

There were 6.6 million mentions of 'crypto' across the platform in the 10 months evaluated in the recap. The most popular crypto community was r/dogecoin, which grew in popularity as the meme-inspired cryptocurrency's price skyrocketed.

In January 2021, Dogecoin was worth less than a tenth of a cent. It is now worth roughly $0.17. Endorsements from people like Tesla CEO Elon Musk helped drive it momentarily beyond $0.70 in May, resulting in gains of more than 15,000% in just five months.

Since the beginning of the year, the whole crypto market has climbed from around $800 billion to over $2.3 trillion, with the majority of this value coming from higher market caps like Ethereum and bitcoin.

Although bitcoin's price growth in 2021 was less dramatic than that of dogecoin, it still managed to add more than half a trillion dollars to its overall value.

The world's most expensive cryptocurrency is now worth roughly $50,000 per coin, down from a record high of nearly $69,000 last month.