milordk

en: Create a cloud of users on your social network! Do you have many users? Do you want more communication? Install this widget! 
Provides random members avatar with link to profile
ru: Создайте облако пользователей Вашей социальной сети! У Вас много пользователей? Хотите больше коммуникаций? Установите этот виджет!
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ru: Данная версия плагина не будет поддерживаться в новых версия BuddyPress (1.2.5.1 и выше), взамен будет новый плагин: 
en: This version of the plug will not be supported in the new version BuddyPress (1.2.5.1 and above) will return the new plugin:
Jet Unit Site Could (https://wordpress.org/extend/plugins/jet-unit-site-could/) 
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<a href="http://sportactions.ru" rel="nofollow ugc">Live demo</a> (need registration)
! backward compatibility with 1.1.3
<h3>Contact</h3>
For suggestions, bugs, hugs and love can be donated at the following locations.
<a href="http://milordk.ru" rel="nofollow ugc">Authors page</a>
<a href="http://milordk.ru/r-lichnoe/opyt-l/cms/prodolzhaem-widget-o-stroenie-jet-random-members-widget.html" rel="nofollow ugc">Plugin page</a>

Jet Random Members Widget

en: Create a cloud of users on your social network! Do you have many users? Do you want more communication? Install this widget!

Chris Taylor

This plugin for WordPress MU is really simple. It allows site administrators to send a (plain text) to all users. You can type in the subject and text for the email, and it will try to send it to all user email addresses in the database.
That’s pretty much it.
There are two small additional features with this plugin. Firstly if any emails fail to be sent the failing email addresses will be shown in a list, so you can decide what to do. Secondly there is a “Test” checkbox, which when checked will only send the newsletter to the site admin email address.
If you have a lot of users this plugin may take a long while to run, as it sends a separate email for each user. There is some reasoning behind that: in the future I may write in some special codes that you can use in your emails that will insert the users email address (so they can unsubscribe, for instance), a link to their wp-admin folder, and more user-specific data. That stuff is pretty much impossible to do if you use BCC to send one email to multiple people.

Sitewide Newsletters

Sitewide Newsletters is a Wordpress MU plugin that allows site administrators to send an email message to all users.

Jet Random Members Widget vs Sitewide Newsletters