## 6 Discussion
### Comment-Heavy Users: Social and Emotional Engagement  
On the other hand, our linguistic analysis reveals that comment-heavy users typically adopt a more casual, socially oriented engagement style (see Section 5.2). Their comments are characterized by informal structures, colloquial language, and playful spellings such as \"loooooove\", aligning with lower Analytic scores. Additionally, they frequently use personal pronouns (\"1\", \"you\") and an abundance of emojis. This informal and expressive tone contributes significantly to their higher Tone scores--indicating predominantly positive emotional language--and the frequent expression of affection, exemplified by phrases such as \"I miss you\" or \"I love you\". Consistent with these observations, recent large-scale studies have found that user comments across various platforms have become linguistically simpler and shorter over time, yet they continually incorporate novel linguistic elements such as new slang and memes [62]. Emojs, in particular, function as a form of \"social media paralanguage\", enabling commenters to express nuanced emotional tones and foster affiliative bonds, thereby strengthening community identification [63]. These findings align closely with our data, demonstrating how comment-heavy users utilize expressive markers like emojis, informal spellings, and personal pronouns to sustain a shared identity and sense of community belonging. Moreover, prior research suggests that emotional expressiveness itself acts as a catalyst for community engagement [64], highlighting how the emotionally charged and vibrant comments from this subgroup can encourage ongoing participation and strengthen communal ties. Notably, when comment-heavy users transition to posting, their Clout and Drives scores increase relative to general users. Higher Clout scores indicate that comment-heavy users confidently position themselves, leveraging the trust and rapport established through frequent informal interactions to influence or mobilize community actions [59]. This strategically positioned influence aligns with the documented roles of random leaders or influential participants who shape community activities, narratives, and collective sentiments through regular social interactions [57; 60]. Elevated Drives scores further suggest their posts reflect strong personal motivations aimed at mobilizing community engagement, reinforcing earlier findings that active commenters significantly influence group dynamics and sentiment cohesion within random communities [57; 61]. Additionally, their posts exhibit higher Social dimension scores compared to post-heavy users, consistent with their inherently interactive and relationship-oriented communication style. This relational focus--even in original posts--highlights their essential role in fostering community cohesion and interpersonal connectivity within digital fandoms. Such roles are consistent with previous research identifying highly interactive fans as critical social connectors who sustain community vitality [58; 61]. Extant literature emphasizes that these social interactions serve as the community's \"social glue\", crucially supporting sustained engagement and collective identity [57; 60]. Although comment-heavy users' Authentic scores were similar to those of general users, their consistently higher Tone scores and greater reliance on emojis underline their emotionally expressive communication style. This approach fosters a welcoming and supportive atmosphere, enhancing group solidarity and overall community cohesion [44; 58]. Furthermore, frequent emoji usage serves as a critical emotional cue, reinforcing perceived authenticity and emotional connectivity among users--an essential factor in maintaining long-term community engagement and satisfaction [60]. Previous studies have noted that emotional expressiveness, including emoji use and affective language, is strategically employed within random communities to deepen social bonds and maintain vibrant participatory cultures [58; 61].