Want e-mail addresses of your Twitter followers? Just ask Foursquare
Check out what my folder called Foursquare consists of in my g-mail...
from foursquare <noreply@foursquare.com>
reply-to Twitterfollower'sEmailAddress
to My4sqEmailAddress
date Wed, May 5, 2010 at 3:34 PM
subject foursquare :: Twitter Follower is now your friend
signed-by email.foursquare.com
hide details May 5 (9 days ago)
Hey there - Just a heads up that Twitter Follower has approved your friend request on foursquare.