How do I delete comments?

You can delete any comment that you create on anyone else's blog, as long as you signed in to your Google Account when you left the comment. You can also delete any comments (registered or anonymous) that are left on your own blog, or on another blog for which you have admin privileges.
To delete a comment, first make sure that you are logged in to the correct Blogger account (administrator of the blog or author of the comment). Then go to the blog and find the page where the comment is listed. Next to the comment, you should see a trash can icon, like this:


Click the trash can and you will see this confirmation page, which also lists the comment for review:

What is the word verification option?

The "word verification" option can be found on the Settings | Comments tab for your blog, and it looks like this:
If you choose "yes" for this setting, then people leaving comments on your blog will be required to complete a word verification step, similar to the one presented when you create a blog:
What this does is to prevent automated systems from adding comments to your blog, since it takes a human being to read the word and pass this step. If you've ever received a comment that looked like an advertisement or a random link to an unrelated site, then you've encountered comment spam. A lot of this is done automatically by software which can't pass the word verification, so enabling this option is a good way to prevent many such unwanted comments.



http://www.google.com/support/blogger

What are backlinks and how do I use them?

The Quick Answer

• Backlinks display other webpages that link to your posts.
• To enable backlinks on your blog go to your Settings|Comments tab and select Show

Backlinks enable you to keep track of other pages on the web that link to your posts. For instance, suppose Alice writes a blog entry that Bob finds interesting. Bob then goes to his own blog and writes a post of his own about it, linking back to Alice's original post. Now Alice's post will automatically show that Bob has linked to it, and it will provide a short snippet of his text and a link to his post. What it all works out to is a way of expanding the comment feature such that related discussions on other sites can be included along with the regular comments on a post.
The backlinks setting can be found under the Settings | Comments tab, and consists of a single, simple option to turn it on or off:
Our default templates are already set up with the necessary code for backlinks. However, if you have a custom template, or one of our templates from before this feature was launched, you will need to add the code yourself. Instructions for that are here.
Once everything is set up, you'll see a new link marked "Links to this post" next to the comment link for each post:
If you click that link you'll be taken to the post page, where the backlinks are all listed beneath the comments. Clicking the triangles next to each link will display a snippet of text from the page linking to you, as well as some author and date information.