Description of problem:
I changed an option from off to on. (Notable: All options initially shown as off, but I'm getting a firehose of all notifications.)

Version-Release number of selected component:
fedmsg-notify-0.4.0-1.fc18

Additional info:
cmdline:        /usr/bin/python /usr/bin/fedmsg-notify-daemon
dso_list:       python-libs-2.7.3-13.fc18.x86_64
executable:     /usr/bin/fedmsg-notify-daemon
kernel:         3.7.2-201.fc18.x86_64
uid:            18281

Truncated backtrace:
decoder.py:384:raw_decode:ValueError: No JSON object could be decoded

Traceback (most recent call last):
  File "/usr/lib/python2.7/site-packages/fedmsg_notify/daemon.py", line 122, in settings_changed
    for filter in filters]
  File "/usr/lib64/python2.7/json/__init__.py", line 326, in loads
    return _default_decoder.decode(s)
  File "/usr/lib64/python2.7/json/decoder.py", line 366, in decode
    obj, end = self.raw_decode(s, idx=_w(s, 0).end())
  File "/usr/lib64/python2.7/json/decoder.py", line 384, in raw_decode
    raise ValueError("No JSON object could be decoded")
ValueError: No JSON object could be decoded

Local variables in innermost frame:
s: 'announce FAS Bodhi git unhandled fedoratagger Wiki logger Pkgdb compose meetbot'
self: <json.decoder.JSONDecoder object at 0x1e5df10>
idx: 0