In some good news, Canaccord Genuity estimates that Twitter (TWTR) saw more acceleration in user engagement. The headline number is that the social-media platform may see a 4.4 million bump in MAUs for Q4 bringing the total to somewhere above 321 million. This places MAU growth at 5.2%. While the MAU growth sure beats the trend from last Q4 when numbers were headed down, the better number from Canaccord is that user engagement amongst existing users is expanding. The analyst estimates that engagement grew 5.3% sequentially due primarily to improvements from the existing base. In essence, existing users spent more time on the platform likely due to the NFL lifestreams and daily shows from Bloomberg. The stock is a must buy if engagement is back to growth mode. Disclosure: Long TWTR