[020715] Q: why not to make a toy/pilot implem 
using intentionally primitive alg (say XOR, or rot13) ?

[020715] Q: why not support multiple encryption 
algorithms ?

[020715] Q: for open-endedness, why not to 
make an implementation with 2 textboxes but no
save-up included, so it can be used on any 3rd party web hosting ?