Turn Off, Tune In, Log Out

While I think Twitter is quite ingenious--and I use it daily--I'd rather it didn't exist [June 15]. I like getting updates from people I admire, but I always think about them tweeting while they're supposed to be doing other things, and I wonder how the quality of their work will suffer because they're not entirely focused on it. Alyssa Green, DINWIDDIE, VA.

The overblown coverage of Twitter in the media has grown tiresome. Steven Johnson reports that Twitter had 17.1 million visitors internationally in April, but with the U.S. population at more than 300 million,...

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