>Everyone gets tired of 19 out of every 20 posts being about why they need Viagra, and goes back to MySpace. So lets say advertising is considered free speech

>Everyone gets tired of 19 out of every 20 posts being about why they need Viagra, and goes back to MySpace. So lets say advertising is considered free speech and you may freely do it. In essence it would be a tragedy of the commons. The out of control advertising would eliminate the usefulness of the forum.