Ask HN: What's the best live blogging/etherpad-like service?

I've got a research team of three that makes live notes for me in a "ticker" (google doc) to inform my angel investing. They basically profile startups and product information for me, and from that I select startups to meet with it. I'd like to share the real-time ticker with the public, but Google Docs is a just a dog when you invite more than 25 people to it. I'm wondering if there is a live blogging style platform out there that can handle like 10,000 folks watching my researchers type. Thoughts? Etherpad wasn't stable enough sadly.