I tried something interesting to see what would result. For one day, I turned off the Simple Spam Filter plugin, written by the most excellent Tan Tan Noodles coder, Joe Tan. I wanted to see how much SPAM it was actually prefiltering. Now, my site gets pretty low traffic, as far as sites go. Depending on the stats program I use, either 160ish or 700ish visitors came to see me per day on the highest traffic months. My total bandwidth usage has grown to about 3.5GB per month (thanks in part to the low number of videos and pictures that I host).
After entering some new keywords into the “banned words” list, I stopped having to moderate any comments at all through the Akismet moderation panel. Anybody who has commented has probably been stopped by SSF and asked if they are indeed human at least once, as there are some pretty common words that show up in spammers comments as well as normal ones done by humans that care to engage in a REAL conversation. I hope that you’ve enjoyed my attempt at humourously presenting the verification button to you.
What I was worried about was that legitimate commenters weren’t getting their point accross, as no spam to moderate is a bit strange. Hopefully all you real, live commenters realize by now that you just have to click the button to have your comment appear without any further moderation.
So, what was the result? Of the comments that came through that Akismet hasn’t learned yet and auto-deleted, I got 48 comments in my spam moderation queue. There were no false positives. I turned SSF back on and the spam comments stopped getting through. Thank you, TanTan Noodles!