GitHub plans to offer free hosting for open source projects, with a reasonable size limit, while ensuring efficient space utilization due to Git's capabilities. A typical large project, like Rails, occupies minimal space, exemplifying Git's efficiency. The vast majority of GitHub's users utilize less than 50 megabytes for public projects, highlighting its space efficiency. Forking a project also requires minimal additional space, further showcasing Git's storage effectiveness. Large open source projects exceeding the size limit are encouraged to contact GitHub, as the platform is open to sponsoring their development. Users are invited to sign up for a beta invite to experience GitHub's services firsthand.