So is voices. Unlike echo, voices contact is not added by default — you have to manually add it via Tools > Add a contact… menu. Once added you can send messages to it (as short as empty) and hear back the messages from other people, who talked to voices before along with their username.
We’ve discovered “echo” robot, which is added to the new users’ contacts by default has been broken for a few days now. We are now working to isolate the issue and bring it back online. For now if you want to test Loudtalks briefly please feel free to add me (“alex”) to your contacts.
I’ll post a separate note, when echo is back online.