This practice is considered advertising.

I don't understand why.

It may have been a nice thing you were doing, but the Guardians saw the potential problem. People would subscribe just to have their projects posted, so you would get more subscribers than normal, and it wouldn’t seem fair.

Hi ɛʀɮɨʊʍ,

As the others have said, this is not something that we allow since we consider this to be a form of advertising.

For more information on this issue, please see my comment in this older thread: https://support.khanacademy.org/hc/en-us/community/posts/360062303932/comments/360010435052

Oh ok. It does not clutter anything though. I will stop