So far this has resulted in 0 spam registrations since installing. Works great!

Do you have any other spam blocking stuff installed, like another mod, questions etc?

It's working great on my site too.

Nothing else installed and I haven't had a spammer since putting it in.

I know it is just a matter of time before it is compromised like it has in the past, but so far so good.

D.

I have spam o matic installed and was using my own question and answer and was having at least 2 spam registrations every day. I installed this mod and dropped my Q&A and my registrations have been zero since.
I hope it is a very long time before it gets compromised.

So you did not test it with SOM disabled then?

Even with this installed, I'm afraid bots still can go through. I figured seeing it's google, it would make it more difficult for the bots to register. But bots can be programmed, I Just saw a spambot post today on my forums.

And that was with this installed? What other forms of spam protection are you using?

The only other thing I have installed is the vsa forum rules (to accept the rules at the registration page) and the coppa age setting.

It's possible they were human spammers.

I would suggest reading this, and using the mods suggested as well, The era of Big Spam is over

This works on VB5?