I made an account on Flexcoin and sent $0.005 bitcoins to it. It shows up in "recent transactions" and the "total balance", but not "available balance" which means I cannot sent them out yet. The following is a section in their TOS:
Availability of Funds: Any bitcoins deposited into your Flexcoin account will become available to transfer after FIFTEEN (15) confirmations on the bitcoin network. While you must wait for 15 confirmations before transferring these coins to an external bitcoin address or another flexcoin user, the incoming bitcoins will show on your recent transactions page almost immediately, and their sum will be added into your total balance at that time. ALL COINS in the Flexcoin system will follow this rule, and will not be available to any user until they have reached 15 or more confirmations.
But what does that mean? How can I get confirmations?