How well does Django's anti-spam system in the comments framework work? Have you used it? What percentage of comment-spam does it prevent roughly? Is there anything else you do to help prevent comment spam on sites using the Django comments framework?
By default Django only offers a honey pot field and a hash check for spam prevention. It stops a lot of spam but absolutely not all. I'd guess at maybe 50-70% or so. For a very small site I have with less than 50 unique visitors per day, that is all that is needed. For larger sites, you definitely need additional protection like Akismet.
There's a Python API to Askimet. It's what wordpress uses to stop spam (and it works pretty well).
来源：https://stackoverflow.com/questions/915204/django-comment-spam