I installed Spam-O-Matic a few days ago. For some reason its logging behavior has been intermittent. So far, I've only seen one log instance of "Passed StopForumSpam checks. Sent to vBulletin Registration System" - despite that several new members have joined who are not spammers/spambots. I'm unsure why it seems to miss logging most new registrations. It has, however, been blocking and logging some spambots at least. But I don't think all of its actual blocking events are appearing in the logs, either.
I wish Spam-O-Matic were more dependable/consistent as far as logging goes (so I could see what it's actually doing and not doing). Thankfully its inconsistency is not a major issue for us... because we use it in conjunction with our manual IP blocking technique, together with a few human verification questions. The combination of these things, along with an occasional manual deletion here and there, tend to keep out 100% of the spammers for us.
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