A plus sign next to a member's name indicates they are on another user's buddy list, though it is unusual to see it next to one's own name. The buddy list allows users to easily see when friends are online and send private messages. Discussions also touch on the ignore list, which prevents users from seeing posts or messages from those they choose to ignore. Some members humorously explore the idea of adding themselves to their own buddy list, while others reflect on the social dynamics of being on buddy or enemy lists. Overall, the conversation highlights the functionality and quirks of these forum features.