James Seng’s blog: Solution for comments spams
To cut the story short, I wrote a plugin to MT that will verify if it is a human before it allows comments to be posted. The idea is pretty simple: Display an image with a Security Code and demand the user to enter a Security Code manually before allowing posting to go through.
I haven’t tried this yet, and my volume of comment spam isn’t so great that I need it. I just wanted to post this to connect my query with the solution in case anyone else needs it.