If I try to create a topic/queue with a space in the name, it inserts "\u0020" preceding each space.
Here is an example in Python:
connect_frame = 'CONNECT\n\nlogin:admin\npasscode:password\n\n\x00'
frame = 'SEND\ndestination:/topic/the next topic\n\nhello\x00'
sock = socket.socket()
sock.connect(host_and_ports) # where host_and_ports is a tuple (host, port)
Then when I get the topic information (by looking at it in the web interface or by http-getting the json info in Python), the topic id is
the\u0020 next\u0020 topic
We recently upgraded from Apollo 1.0 to 1.5, and I think that this issue coincides with the upgrade (there were definitely successful uses of topics with spaces in them before the upgrade).