Don't forget to mention that it was selected as the AES
standard for a replacement to DES. If it fits whatever
problem space you are working on, you can use it and then
compliment yourself in your advertising of using a standard
that is likely to be officially approved by the US for a
decade or 3...
In other words if you just need encryption and have no
particular reason to choose one over another, then Rijnael
should be your choice.
Comment on Re (tilly) 2: Encrypting Credit card numbers