Buying CD's at ING

I have recently started putting new funds in ING Cd's this will continue until December 31st. I have chosen 6 month Cd's for a single reason. I can buy Cd's for $30 everyday and after 6 months have one mature everyday. This is going to become part of my safety net. Should something happen to my job or another major event in my life take place this would be enough to take care of my current bills. Of course there is always the savings account if things get hairy but I prefer to not leave that alone. The Cd's are only paying 3% but most of my investments aren't even doing that so for six months I will try a more predictable savings vehicle.