As an anti-spam measure, the forced comment preview in combination with Akishmet anti-spam helped to single out virtually any spam comment I received. But the forced comment preview started to annoy me personally, so I decided to switch to Challenge in combination with Akishmet instead. I trust it is a lot easier than those stupid image validation mechanisms, but just as troublesome for spambots. And even if it’s not, Akishmet will still stop them anyway.
I will blend it in a little better with my layout later.