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How to import your Hotmail contacts to Twitter
This is quite a nice little bit of functionality I spotted today... A pop-up box asked me if I'd like to see which of my Messenger/Hotmail contacts are using Twitter. Once prompted just enter your Hotmail email address along with your password.
If you don't see the Hotmail prompt, don't worry, it is simple enough to find:
Ensure you're signed-in to your Twitter page and click the '@ Connect' option in the header. Look towards the "Who to follow" tab and select 'Find friends'.
You should see your Hotmail email address listed here - hit the blue button that says 'Find friends', then enter your Hotmail details to see which of your friends have a Twitter presence.