Some Internet specialists argue that Wikipedia should adjust to a mobile world by harnessing “micro-contributions” like those on Twitter and Facebook. For example, they suggest creating a “like” button similar to Facebook’s that would allow a reader to flag errors in Wikipedia articles, or to suggest those that need to be updated. Quickly adding photographs to a Wikipedia article from an editor with a smartphone is another possibility.

“If it is within two or three clicks, it is happening more automatically,” said Joseph M. Reagle, an assistant professor at Northeastern University and the author of “Good Faith Collaboration: The Culture of Wikipedia.” “If it requires more than two or three clicks, it’s not happening so easily.”

One young Wikipedia editor, Nicholas Nuccio, a teenager from Staten Island, said he had made thousands of edits to Wikipedia from his iPod — usually about television shows — and was undeterred by the relatively smaller screen or more difficult editing tool.