Twitter soared to $1 billion in valuation in its most recent round of venture capital funding,
TechCrunch reports—up from $250 million in a round earlier this year. CEO Evan Williams shared the results with Twitter employees during a recent meeting. Sources say the company will raise about $50 million; it raised $35 million in the last round. This time, Insight Venture Partners is reported to be the primary investor in the startup.