Could the "projects" feature be used to keep clients updated on progress?

[Leissa Gebert]

I have a service business that helps new entrepreneurs build the foundation of their businesses.  It occurred to me that the Trello projects feature might be an easy way to keep them updated on the progress being made on their specific product.  It could also be a good way for them to communicate with me about that project.  I like having everything relating to a project consolidated vs multiple emails and messages that get so scattered.

Can both the follower and the contributor make comments and submit documents to a card/board?

It would also give the new business owner a glimpse into how to use Trello for their business going forward.