Docs users can now invite their friends

Still waiting to get in for Facebook? Your wait may soon be over. Docs users can now invite their friends.
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The maximum is set to 32 50 (in one batch/a day?).

Earlier the site got an update that lets you add a Profile Tab on Facebook and gives you a short URL for your Docs folder. 
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For the short URL, Docs uses your FB vanity URL. If you don’t have one, Docs uses your FB user ID.

Ready to invite your friends to Docs (and/or Add a Profile Tab on Facebook)? You will find quick access to both features at the bottom right of the home page.
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Docs page on Facebook