It’s a stream of Twitter today. The company explains why “WikiLeaks” wasn’t trending: its algorithm favors velocity over popularity, though it uses both. Meanwhile, a Pew Research Center survey suggests fewer than 15 million adults use Twitter in the US. Yes, there’s a margin of error in the survey, and Twitter has more than half its users outside the US. Butt there are a lot of inactive accounts, brands, and bots in Twitter’s self-proclaimed 175 million global registered “users.” (Treat the survey’s activity stats with caution – the sample size of Twitter users is about 100.) Finally, with the loss of its product head, tongues are wagging about a lack of innovation at the company, or even corporate turmoil. Horrors! A fight between features and monetization? Who ever heard of such a thing?