The IRS Is Coming for Your Crypto. Here's What You Need to Know.

Arena founder Paulo Martins grew up in Brazil playing video games, an industry that thrives on building communities among the players. Later, he came to the U.S., where he was an early employee at Hulu, helping the streaming TV service grow to over 7 million subscribers and $1 billion in revenue.When it came time to build his own startup, Martins wanted to help companies build a similarly committe