Winston for god's sake find a 12-step program that will help you overcome your paranoia; "They" aren't out to get you or us.
No One (including the schmuck making said claim) is paid to spread the sort of disinformation you're suggesting, on various forums. However, there are those with legit scientific degrees and related resume's that may or may not work for oil, chemical and even big pharma type groups that will voice and represent the "company line" when it comes to things like Climate Change and how "safe" Fracking is and so forth. On top of this we have those from within the GOP that will ignore genuine science, especially (it would seem) when the majority of the world's leading scientists are stating certain things as fact, in that these analytical views threaten their one and only God -- MONEY and the illusion of power.
Simply put, there are more than enough people out there willing to barf-up the company line without corporations or organizations to employ "lobbyists" (for lack of a better term . . . well, "Missionaries" might work). There's simply no logical need for such things;
CONvince someone that things are a certain way by exploiting their existing fears, concerns and even religious perspective and the proverbial fire is lit under their ass that compels them to be voice pieces for "the cause". . . look at how easy it is to get you to buy into every asinine conspiracy theory that rolls down the hill
We do however have the exact opposite scenario taking place; those who are naturally "left leaning" on the social-political scale that take every little nugget they are fed and which supports their way of thinking (echoes of the 1960s & 70's hippie culture & political stand) and turns said mole hills into massive mountain ranges. It's the same exact horse but a different color. Sadly, those riding said horse can only see it in one particular color because of the blinders they wear, be it rose or grey tint.
There's a commercial running on Tv right now in which an air-headed blond bimbo states that "everything on the internet is fact" and that it is "illegal" to post anything that's false or misleading. Yet, analysis shows that as much as 63% of what we find on-line and most especially on certain types of forums (where the odds are even greater) is significantly false, misleading and grossly under-researched. The bulk of said material being posted by persons that are naturally paranoid, insecure, and incapable of thinking things through in a logical or even semi-rational manner. The key areas in which the greatest amount of inaccurate facts are to be found are the WTC/9-11 tragedy, the Kansas City Bombing, JFK, RFK, & King assassinations (hell, even Lincoln is caught up on such things), Climate/Earth Changes, End Times Prophecies/2012/Hopi/Merlin, etc. and then we have the petty issues like the Obama Birther Bull Shit, Gun Control and Marijuana validity arguments. There's something like 130ish "key" conspiracy niches with the bulk of them having absolutely no leg to stand on and yet a myriad of fool buy into them.
Why?
A big chunk of it has to do with their own natural bend and perspective on things which must include the environment they grew-up in as well as that they presently exist in. If you surround yourself with a bunch of "like minded" individuals then of course you'll end up a chameleon and blend in with the crowed because of your own insecurities and need for acceptance. The rare contradiction to this are those that thrive best when stirring the proverbial pot in order to generate arguments (not debate, but deliberate and harsh confrontation . . . I've seen this sort on Magic and New Age forums, you name it).
The Bottom Line in this Case is "
YES" there are those that come into forums in order to plant seeds of doubt & challenge when it comes to various issues. But
NO they are not paid to do so.