I developed "Random Users Widget" plugin.This plugin displays user's avatar/handle/fullname at like position. In my site, display on login page. Avatar/name is linking "Web site" on user's account. Only users who desired display by "Agree display avatar at xxx page" of account page is displayed on widget.
Compatibility
Q2A V1.5 higher
Function / Admin option
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Display number
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Title (non / display)
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Avatar (non / display)
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Avatar size
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Name (none / handle / fullname)
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Link (none / internal / external)
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CSS file URL
You can see on my site.
Best regards.