Enable “Fixed widget” option in the widget settings and it will be always in sight when page is scrolled down or up. There is no problem to “fix” or “stick” more than one widget even located in different sidebars!
Simple plugin which allows you to display author/user info inside WordPress widget. Smart feature of this plugin is user/author “auto detection” which means that it can optionally show author of current post on single post templates or on specific author archive.
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