I read the link. Yeah, the left does that. And how many of the "registered users" at kos or DU are Freepers, and vice versa?
At least the internets give us a chance to check things out more closely than when we just had papers and radio.
As the article hints, the blogs first try to establish bona fides, then they start echoing the MSM push-polls that over-sample Democrats in order to create the impression that public opinion is shifting towards Democrats. It's a psyop to try to get moderates to feel "peer pressure" to swing the other way on the grounds that everyone else seems to think the Democrats are better, so I'll just go along to get along.
When rogue bloggers like this guy upset the plan and expose the players, they have to silence him quickly.
-PJ