Hoople - 5:32 pm on Dec 10, 2011 (gmt 0)
+1 to mack's comment.
I was working on speeding up a blog and found a social recommendation widget was making referrals to every site it had a button for. It took *lots* of time to ratchet thru that list and then let the sever go on to serving subsequent content.
I shaved a considerable overhead by changing to a widget that used a common image sprite for the social icons.