The action of putting your hand outstretched onto a friends shoulder in a patronising way when they embarass themselves or generally get owned, humiliated or say something silly.

A "Concerned American", is one who has had enough of the government's intrusion into their "daily" lives, some one who has watched the "decline" of the peoples Rights, as defined by the original writers of the Constitution. Who has seen the government being taken over by the controlling interests of money hungry corporations, who now are actually in control of the government. A "Concerned American", is one who will speak out against the tyranny which is starting to engulf this country, and turn it into a third wold mud puddle where the "rich" will always have, and the poor get poorer and poorer. A "concerned American is one who will defend himself against these oppressions, just as the founding fathers did against a tyrannical British rule. A concerned American will not allow the government to "brainwash" our children into placidity about their lives, and their place in the world. A "Concerned American" will be willing to defend his home against the government force that will be placed into this country, by illegal means to squelch any form of rebellion, or resistance, an example being of the "Police State" we are now experiencing, where law enforcement now can do "no wrong",A "concerned American", will stand up for what he believes in his heart to be true, and fair, even if it costs him his "freedom" from an oppressive government.

A person who posts on a blog thread, in the guise of "concern," to disrupt dialogue or undermine morale by pointing out that posters and/or the site may be getting themselves in trouble, usually with an authority or power. They point out problems that don't really exist. The intent is to derail, stifle, control, the dialogue. It is viewed as insincere and condescending.

Sad attempt at hiding ones identity for self-worship.

See definition 1 of Shakkara.

In a situation where there exists mutually exclusive positions A and B, a concern troll is someone who supports A but professes to support B around genuine supporters of B. However, they express their "concerns" about aspects of position B in order to sow doubt and uncertainty amongst genuine supporters of B.

Whilst this does genuinely happen, the term is used by some paranoid people to effectively mean "anyone who does not agree entirely with the standard dogma of position B, thus must actually covertly support position A", when said person does actually support B, just only 99%.

Thus: disagreeing *at all* with the standard dogma of B will get you branded by such people as The Enemy, and you will get generally treated with hostility and suspicion and, at worst, forcibly ejected from the B-supporter group. Result: everyone stops thinking about the issues, and discussion descends into not arriving at logical and interesting places but who can most furiously support B.

A person who lurks, then posts, on a site or blog, expressing concern for policies, comments, attitudes of others on the site. It is viewed as insincere, manipulative, condescending.

It simply means you do not care