You are correct - any time an article appears on any mainstream blog or newssite about anything remotely related to AGW or CAGW etc, the hordes of deniers pounce to try and corrupt popular support to their twisted minority view, then move on to the next. They appear to be highly organised.
On forums that support comment voting, messages that you and I would deem to be rational and common-sense will quickly get a wildly disproportionate negative score if it appears to contain any whiff of truth supporting the reality.
Good example of this here - http://www.bbc.co.uk/news/science-environment-17126699 swamped by some recognisable WUWT followers.
Almost as if they just exist to trash the science. I can see through it, but the average Joe probably can't.
Scientists by and large are rational and analytical people, passionate about their work and motivated by discovering answers to the problems they investigate - the rewards of discovering the truth of a mechanism or process, or creating something new are intrinsic. Financial reward is very much secondary.
I suspect that they don't easily comprehend that other kinds of people don't, won't or can't see the world in the same way, that have belief systems not based on logic and are able to selectively deny evidence if it doesn't support their agenda - I guess all sides can be guilty of this to some degree, but AGW denial is getting particularly nasty, and especially sad that Republican politicians seem to be abandoning their duty and disowning GW in order to win votes.
Nature doesn't respect party divides - ask King Canute.
There are a few activists that care enough to try and counter the denialists threat, but they are outnumbered. The average guy doesn't feel as compelled to act as the sockpuppets, perhaps they are busy dealing with more immediate worries of paying the bills, but after all, their futures are also at stake, which is a teensy weensy bit more important that the short term profits of those with an interest in seeing that Humanity doesn't do the right thing and transform to a sustainable future.