Yes this is a very needed feature, especially for blog, I think you can create author type and link it as related item but if there is a way to link an real zoo Author (username) to that author type automatically, we can open submission to some bloggers and they don't need to select the author name themselves.

I would also be really interested in this feature. I think it is indispensable for sites with many users uploading their own content such us photo galleries and so on.

Might not answer your problem directly but there's a free extension out there called AuthorLink in the JED. This will allow you to create an element that automatically links to the authors user profile either in the general Joomla user table, Community Builder or a number of other profile options.

YOOtheme hello gentlemen, I write for the reason that the ZOO and I are allowing WIDGETKIT Display the folders you select to choose a gallery please need solution, since the products are all original, soloucion that need prompt solutions its website and all the tutorials and alos applies, please give me immediate solution thanks

I need this feature but AuthorLink isn't the answer (I've checked this out) as I want zoo Product and Directory items displayed by author ID and filtered by category. However I do not want other authors to see work or reference to any other user/author this is why Related Link Pro and Related Category Pro doesn't work either. Incredibly frustrating because this is mission critical to the project.

@Karen
Perhaps Related Items pro from zoolanders might help you.
It lets you filter items by author in 'edit elements'