Captcha

In an effort to curb comment spam Blogger allows you to set word verification aka captcha.  If you've been doing any blog hopping to the point of wanting to leave a comment you will have come across this already.  Essentially the commenter has to type in the nonsensical word into a box to prove they are a person not a bot.  There is no doubt that using a captcha curbs comment spam.  The problem is many readers don't like captcha so in some ways this reduces the number of comments you get since some will pass on commenting if a captcha is involved.  I personally don't like using captcha but it does serve a purpose.  From a blogging point of view the captcha combined with comment moderation will essentially keep comment spam in check. 

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