...A friend -- a movie writer -- recently commented to me that, while he used Wikipedia a lot, the Wiki articles on anything he actually had personal knowledge of were mostly only about 60% accurate. "I think you can change them," I told him. "That's part of the Wiki thing, isn't it?"

"I did," he said.

"Oh. Well, then.That's all right."

He shook his head. "I checked last week. Somebody already changed them all back. ..."