We're now having pretty good luck with the Anti-Splog plugin, but I'm having just one issue:
If I mark blogs or users as spam directly in the WP interface, they are successfully hidden from view in Activity.
When Anti-Splog finds them, they do still show up in the Activity stream. You can see this on our live site:
Any idea why this might be taking place? Do I need to customize the query in that theme, or specifically check to see if they've been marked as spam?