Yes! This is what our lawyers suggested to protect ourselves.
We delete all the recordings when you click delete, so we can't recreate the voice anymore. However, this is still necessary in case we share some generated sentences in social media or so (like we're doing on twitter now).
Hi! Thanks for testing it! For many voices it works well with only 30 recordings. For some, you need a bit more. It seems that quality of the audio (no background noise, clear and loud voice, lots of intonation) is what matters the most.
It's important to make people realize that this technology is here. It's impossible to stop the technological advances but at least we can reduce their impact by making it well known.