I'm thrilled about the opportunity to collaborate on this project! With my expertise in Website Design, Mobile App Development, iPhone, CMS, and Web Development, I'm confident in delivering exceptional results. I can create a user-friendly bulletin board app/website with a filterable event listing, premium positions for subscribers, and email notifications for viewers. Are there any specific design preferences or additional functionalities you'd like me to consider? Let's discuss further to ensure I meet your project requirements.