[nl]

Why throw away that value?

Because others can extremely negative - to the point where they may put some people off publishing in open forums.

The very small amount of value that they may add is easy outweighted by a single person not publishing.

[return0]

I do not believe that. On the other hand not all publishing is valuable: http://www.nature.com/news/the-pressure-to-publish-pushes-do...