This study introduces an innovative approach to improving speaking proficiency among Korean EFL learners through the use of vlogs, further evaluating their impact on learners' foreign language speaking anxiety (FLSA) and willingness to communicate (WTC). In this semester-long experiment, 49 university students were divided into an experimental group (n = 25) and a control group (n = 24). The former engaged in vlogging activities, while the latter received traditional instruction devoid of social networking. Data were collected via pre- and post-questionnaires on FLSA and WTC, coupled with pre- and posttests assessing speaking skills. Vlogging significantly decreased FLSA and bolstered WTC in Korean EFL learners, demonstrating a marked improvement when contrasted with the control group. Additionally, the experimental group, engaged in vlogging, displayed superior advancement in vocabulary, comprehension, fluency and task proficiency. However, no discernible enhancements were observed in speaking accuracy when compared to the control group. With the evidence of reduced anxiety, increased communication willingness and enhanced speaking proficiency in the vlogging group, this study provides a concrete foundation for EFL teachers to consider integrating vlogging and similar social media-based activities into language instruction. This approach could contribute to creating more engaging and comfortable learning environments, aiding learners in overcoming affective barriers and improving their language skills.