Poll: How Valuable Is Your Biggest Account?

I suspect that for many, their single biggest account represents a disproportionately large chunk of business. Everyone is looking to land 'the whale', and when they do, just how big is it?

Individual salespeople or entire companies regardless, how much revenue does your biggest customer contribute to your total?

Vote below:

To anyone who has one account constituting more than 50% of their revenue: Is it not incredibly dangerous to have all of your eggs in one basket?