In a year’s time, Twitter has gone from a company that can do no right to one that can’t do right enough. Both have their downsides.
The latter sentiment was most evident Wednesday after the company reported strong first-quarter results. Advertising revenue jumped 21% year over year to $575 million. That not only contrasted sharply with the 11% decline reported a year ago but also marked the best performance for Twitter’s main source of revenue in two years. The company also added six million users to its monthly base, which...