If confirmation of a specific Mark Forster’s platform is required:
Mark Forster has in-depth knowledge of Squarespace, including: mark forster squarespace
A search revealed a single archived forum post (dated 2018) on a productivity blog where a user wrote, “I think Mark Forster uses Squarespace for his new site.” This claim was never verified, and the URL provided now returns a 404 error. This is likely the origin of the rumor. If confirmation of a specific Mark Forster’s platform