It conveys a feeling of friendship and familiarity in online interactions and is popular among those who bond over hobbies or passions, such as crypto enthusiasts.

In cryptocurrency, "fren" denotes a passionate community member who supports specific crypto projects or currencies. It characterizes individuals actively involved in discussions, support, and information dissemination about blockchain ventures. These individuals often contribute by educating others about a cryptocurrency project's unique aspects and benefits, thereby nurturing a community spirit.
Broadly within the crypto community, "fren" is used informally to address anyone in the group or channel, irrespective of their engagement level or enthusiasm. It's a friendly way to interact with other community members, start conversations, or seek advice and support.
As for its origins, "fren" is a shortened version of "friend." It's a gender-neutral term used for casual interaction and acknowledgment within online communities, emphasizing a relaxed and amicable way of communication.