gistfile1.rb

  def profile_pic(email,size)
    digest = Digest::MD5.hexdigest(email,size)
    # we want to allow parallel downloads,
    # but we don't want to bust caches
    if(%w(0 1 2 3 4 5 6 7).include? digest[0])
      host = "img0"
    else
      host = "img1"
    end
    return "http://" + host + ".lnkherd.com/avatar/" + digest + "?s=" + size + "&r=pg&d=retro"
  end