Welcome back to The TechCrunch Exchange, a weekly startups-and-markets newsletter. It’s broadly based on the daily column that appears on Extra Crunch, but free, and made for your weekend reading. Want it in your inbox every Saturday? Subscribe here. Ready? Let’s talk money, startups and spicy IPO rumors. So very much happened this week. If you are just catching up, the Equity crew spent good time this week parsing through a host of recent early-stage venture capital rounds; if that’s your jam, head here. Today for the newsletter The Exchange…