Twitter reported better-than-expected results Wednesday during its first-quarter earnings call. CEO Jack Dorsey told investors that the company’s revenue growth was up 21 percent year over year, with a total of $665 million for the quarter. Daily active usage grew 10 percent, and the platform gained 6 million users. Dorsey also reported a profit of $61 million, making this the second profitable quarter in the company’s history. Twitter made $91 million in Q4 last year.