I think that the general suggestion of a more tepid response (that is, blacking the background of google/facebook but leaving everything else usable), would probably be completely ineffective. Most people are incredibly unconcerned with things on the internet that they might have to read, so if an ad comes up or something that you can click through, people will click through without reading it because they've been to Forbes enough times to have that behavior trained into them. Unless they commit to a total blackout of their usual features, you can expect very little response from users.