What Are Meta Tags ? 

meta tag is a tag (that is, a coding statement) in the Hypertext Markup Language (HTML) that describes some aspect of the contents of a Web page. The information that you provide in a meta tag is used by search engines to index a page so that someone searching for the kind of information the page contains will be able to find it. The meta tag is placed near the top of the HTML in a Web page as part of the heading.
Blogspot Tips What are meta tags
 There are several kinds of meta tags, but the most important for search engine indexing are thekeywordsmeta tag and the description meta tag. The keywords meta tag lists the words or phrases that best describe the contents of the page. The description meta tag includes a brief one- or two-sentence description of the page. Both the keywords and the description are used by search engines in adding a page to their index. Some search engines also use the description to show the searcher a summary of the page’s contents.
Although most search engines also use the contents of a page as a way to determine how to index it, the creator of a Web page should be sure to include meta tags with appropriate keywords and description.Well-written meta tags can help make the page rank higher in search results
This Answer is from WhatIs.com
Do Meta Description Affect Search Engines Ranking
Nope. Those won’t help you rank either. Google announced that back in 2007 when they said “they won’t affect your ranking within search results.”
What are meta tags how to use ?
Now, unlike meta keywords, the meta description is still useful and important. The meta description is displayed in Google’s search results as the text below your main link. In other words, treat the meta description as your elevator pitch to Google searchers: why should they click your link rather than the other 9 links on the page?
I won’t go into too much detail on this subject . The key points to remember: make them unique to each page, keep them short, and write to entice users, not search engines!
Adding Meta Tags To Your Blog 
1.Just Go To Blogger Dashboard.
2.Go To TEMPLATE Menu.
 Before Making Any Change In Blogger HTML Just Backup Your Template.
3.Then Click Edit HTML.
4. Here Is The Code You Have To Add.
Important :-
DESCRIPTION HERE :Write your blog description.
KEYWORDS : Write the keywords of your blog.
AUTHOR NAME : Write the author’s name.
5.Add Above Code Just Before The Head of your Blog.
If Any Problem Comes Please Ask In Comments.

About Author :

 Yogesh mandge is a passionate 16 Year old emerging Blogger From Jabalpur, Madhya Pradesh.It is his First Post on Technosphere as a guest Blogger on Blogging and its Benefits.if you Liked the post you can contact him on his email at onlinecracker2@gmail.com. or Follow him.
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