It was exactly one decade ago that Twitter co-founder Jack Dorsey posted the world’s first tweet, and now there’s close to half a billion tweets being posted each day. However, there are a few problems that have plagued Twitter over the last ten years that continue to plague it to this day, such as the fact that even though it’s an incredibly important tool for breaking news and live event coverage, the size of its userbase doesn’t reflect that importance. Dorsey, who’s currently serving as the company’s CEO, claims that this is because the majority of Twitter’s users aren’t registered with the service, otherwise its userbase would be close to a billion.