Oddly enough, the same people felt that “She felt scare” was clearly wrong. If “scare” is wrong and “scared” is correct, then shouldn’t the same hold true for “concern” and “concerned”?

On the web, I do see many people using “feel concern” although it is slightly less common than “feel concerned”.

The Internet has changed the way language spreads and evolves. It also changed the way we keep track of that evolution. A new book by Grant Barret entitled, “The Official Dictionary of Unofficial English” is a great example of that. By using the technologies available on the Internet, he devised a way to record new words and word usages. It is a printed version of his site doubletongued.org. By reading the chronological citations for each word, you get a sense of how it spread and evolved. As amusing as some of these words are, studying of this process of evolution goes far beyond mere entertainment. I think it’s a great contribution to the modern lexicology.