user-based navigation

Hi,

I’m building a wp-based community blog (i.e. it will have multiple users) and I’d like to a have browsing posts by users, similar to date-based and category-based browsing.

Is it possible? Is there a plugin for it?

I found some plugin to “restict” users to categories but that is not what I’m looking for. I just want another sidebar list “Users” with each item selects entries by a given user.

Thanks.