diff --git a/script/post_to_twitter b/script/post_to_twitter
index ad82d8b..35b3fd1 100755
--- a/script/post_to_twitter
+++ b/script/post_to_twitter
@@ -44,6 +44,11 @@ Time.now - 1.days).order(:id).each_with_index do |s,x|
     title = "- #{title}"
   end
 
+  # if there are any urls in the title, they should be sized (at least) to a
+  # twitter t.co url
+  left_len -= (title.scan(/[^ ]\.(com|org|net|edu)/i).map{|u| [ 0,
+    Twitter::TCO_LEN ].max }.inject(:+)).to_i
+
   if title.bytesize > left_len
     status = title[0, left_len - 3] + "..." + status
   else