PromoSM is a platform for social media promotion that offers services for YouTube, Instagram, TikTok, and more. It allows content creators to engage with promotional services and tools to increase their videos visibility and potentially attract new subscribers to their YouTube channel. To use PromoSM, one needs to create an account and add funds to their balance. Then, they can select a service, enter their link and the amount they want to purchase, and create promotions in seconds. However, PromoSM has received mixed reviews, with some users claiming that it provides relatively lower quality services. Some users have also reported receiving spam comments with the word "PromoSM" on their videos, which are believed to be from bots advertising the platform.