Physics Forums (PF) operates as an all-volunteer platform where mentors and homework helpers provide assistance without compensation, driven by a passion for learning and community. Mentors may or may not have met in person, and helpers are recognized based on their contributions rather than actively recruited. The site generates revenue through member contributions and banner ads, but the focus remains on fostering a supportive environment for science enthusiasts. The evolution of PF from a high school project to a robust community involved significant contributions from early members and a commitment to maintaining quality discussions. Overall, PF exemplifies a collaborative effort to promote knowledge sharing without monetary motives.