This systems which is in Alpha (very early stages of release) looks like an instant messaging system. I was unable to test it with many languages as I would then need people speaking those language to have an online conversation with me! However, it seems to manage the translation as you type.
I am thinking this application could be excellent for communication in health care settings where the patient / carer may not speak good English. Using a system like this would enable the health care professional to communicate with the patient, even while sitting face to face in a consultation. If anyone tests it out in this setting do let me know. Currently translators are used which often means appointments are delayed and this is also an expensive process. While this may not replace all of that, this system could go a long way to helping those who just need a bit of language help in the communication.
If you are so inclined (probably not for health care situations) you can share the conversation on Twitter or Facebook very easily using their tools.