To enable this functionality, sign up for an API key with one of these two services.
Note: Akismet is only free for personal use. Paid commercial accounts are available.
This service is free to use, within their terms and conditions.
If you have either of these settings enabled, the spam filtering will be done automatically. If you have both settings configured, TypePad will be used instead of Akismet.
A sample configuration in settings.py may be:
TYPEPAD_ANTISPAM_API_KEY = 'abc123'