Rally affirms the belief that for the right startup AngelList can help raise a lot of money. $4.4mm of their raise came from AngelList, perhaps the largest online raise ever.

Ironically, Rally is itself a crowdfunding platform. So they used a crowdfunding platform to crowdfund a crowdfunding platform.

Still, this won't work for most companies. You need traction AND name brand investors to attract that kind of money.