Blogger Guide, The word-verification option
To prevent automated software from posting spam comments on your blog, you can ask visitors to enter a short code called a CAPTCHA, before they can post.

With every visual CAPTCHA there will also be an audio version, for visually impaired users. Just click the icon next to the word verification field, and you will hear a list of numbers. Typing these numbers will let you complete the verification step.
Note: Even if you don't have word verification turned on, anonymous commenters might be asked to enter some text. This helps protect your blog from abuse.
Turn on word verification:
- Sign in to blogger.com
- Select "Settings" from the drop-down menu.
- On the left, click Posts and comments.
- Under "Comments," select Yes for "Show word verification." Visitors to your blog will be shown an image of letters or numbers to type to get permission to comment.

With every visual CAPTCHA there will also be an audio version, for visually impaired users. Just click the icon next to the word verification field, and you will hear a list of numbers. Typing these numbers will let you complete the verification step.
Note: Even if you don't have word verification turned on, anonymous commenters might be asked to enter some text. This helps protect your blog from abuse.
You can decide if you'd like to always, sometimes, or never moderate comments. If you select "Always," you'll have the option to enter in an email address where you can receive notifications that there are comments awaiting moderation. If you select "Sometimes," you'll be prompted to specify how many days old the post should be before it requires moderation. "Sometimes" is a good option for bloggers who want to make sure that comments on all posts are kept fresh and recent, and that conversation or debates on old posts aren't suddenly rekindled.
On this page, you'll see a list of all the comments that have been created but have not yet been approved or rejected. (This list excludes any comments made by admin members of the blog.)
For example, let's say that Fred reads Julie's baking blog, and comments on a post she wrote about chocolate lava cake, suggesting that it tastes great with raspberries. Sarah, another reader of Julie's blog and also a huge fan of raspberries, wants to reply directly to Fred. With 2-level commenting, Sarah can click "Reply to this comment" directly under Fred's text, and respond to him. Anyone else interested in responding to Fred's comment can do so as well, adding onto the second tier of comments.
There, you'll see all the settings to manage your comments.


