NOTE: Everything I say are just mere suggestions. It's not a rule or law in the community that has to be obeyed. Also I'm not sure if another blogger has done a post similar to this already.
There has an increasing amount of spammers for some reason on blogs. It has gotten so bad that I was forced to remove my chatbox because of it. I love having a chatbox especially when someone leaves a message or just a hello. I don't love it, however, when someone leaves links to "Cheap good IPhone accessories". It wasn't just one link but several links on a daily occurrence. Somehow they even manged to code the words so they flash and move around, drawing the eyes there.
Even before all this happened I have had spam comments on my blog posts. If you look at my review for Dead Until Dark review you'll notice that I have 86 comments on that review; 9 of those comments were legit--sort of. The rest of them linked to some Asian p0rn site (but mostly Japanese). I thought it would be fun to see how many spam comments it'll culminate, but it started to spread like wildfire attacking my other posts. I was not going to tolerate that. So instead I activated Comment Moderation (which I believe I learned the trick from twitter). It's another option than to use word verification.
To moderate your comments in case of spammers go to Settings. Under Settings go to Comments:
Continue to scroll down until you hit Comment Moderation. I have mine set to 1 week (7 days) when I start to moderate comments, but you're more than welcome to set it to anytime earlier or later than that.
To post or reject your comments just log into blogger.com how you normally will. There should be a link if there are comments that need to be judged.
Some other settings I have are comment notification email. I get an email whenever someone leaves a comment on my blog and if they have an email in their blogger profile, I will also automatically get that as well. It's handy when someone leaves a question on a post so you can easily reply back via email (making sure that they get your reply).
You'll also see I do not use word verification. Word verifications are annoying in my opinion. Even more so when it's an embedded comment box WITH word verification. I've accidentally close internet windows thinking that my comment went through only to discover that I had to type in a word verification in the end. Um opps? Too late, the window/tab closed. So if you really really want word verification for some reason or another, use either pop-up window or full page. Another reason to use pop-up windows or full pages is because some operating systems (Apple computers I've heard from some) have trouble with embedded forms.
Again these are just suggestions.