WP3.1 multisite "mu-plugin" that allows you to add a user to all sites or no sites. Just drop in mu-plugins.
More Plugins
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MailChimp Forms by MailMunch
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Smartarget – Chat Buttons & Engagement Apps
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Login for Google Apps
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PanoPress
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Tabs popular posts and latest posts
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Autonomos
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Software License Manager
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VRTs – Visual Regression Tests
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Leaflet Maps Marker (Google Maps, OpenStreetMap, Bing Maps)
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ACF OpenStreetMap Field
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Profile Extra Fields by BestWebSoft
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OTP Login & Register Woocommerce
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Sale Price for EDD
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Quick 301 Redirects
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User Taxonomy & Directory
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ACF to Custom Database Tables
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Duplicate Menu
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WP Responsive Video
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WP-Members Membership Plugin
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SMS Alert – SMS & OTP for WooCommerce, Order Notifications & Abandoned Cart Recovery