Nuffnang quietly hides its mysterious ugly, white boxy square but the move endangers our search engine rankings!?

I may have wonderful news for Nuffnangers that are irritated by the appearance of mysterious white boxy squares at the bottom of their Nuffnang ads. Those white boxy squares were caused by Nuffnang’s mysterious "nn_network_s" Span ID code, generated automatically by Nuffnang’s ad code during loading time.
It seems that Nuffnang has quietly hidden the ugly, mysterious white boxy square that has