But you cannot add meta keywords to your blog using Blogger Settings. If you want to top the search engine rankings, adding meta tags is only one piece in a large algorithmic puzzle that major search engines look at when deciding which results are relevant to show users who have typed in a search query. Adding meta tag on your blog HTML is another settings that you must know. While meta tags aren't the magical solution that you may have heard, they still play an important role in helping your site get found in search engines, so let’s get started.
Meta Descriptions, which are HTML attributes that provide concise explanations of the contents of web pages, are commonly used by search engines on search result pages to display preview snippets for a given page. (from http://www.seomoz.org)The meta description is the snippet that appears below the blue link in Google search. Words that matched the user query get pulled out in bold. What happens if you don’t write a meta description? In the best case scenario Google’s automated system will pick up a useful string of text from the page which reads well and features search terms and helps encourage the click through.
Here's How to Meta Description to Blogger using Blogger SettingsStep 1. Login to your blogger dashboard then Go to Settings -> Search preferences.
Step 2. Click on "Edit" link of "Meta tags" section.
Step 3. Clicks on a "Yes" radio-button to enable search description.
Step 4. Enter a meaningful meta description into textarea and save changes.
Note: If you have further questions and suggestions about adding meta description to your blogger blogs, just post comment below. Thanks