Coinbase does not close accounts because of inactivity, but for violating their terms of service.
That makes sense, but I did not violate any of those TOSs. I'm just a regular Joe trying to make a buck.
When I saw this
Transfer 0.00007033 BTC out of your Bitcoin accounts
Enter a Bitcoin address to which we will sweep all of the funds from these accounts[/i]
I guess you use coinbase account to receive many small amounts of Bitcoins from faucets. This would make sence for closing the Coinbase account