I assume that you have already added meta tags for your blogger blog. If that is not the case, then you need to view this post namely, "Add Title Tags To Your Blogger Blog" before you proceed with this post. If you had completed the previous step, then follow the following steps.
1. Navigate to Design->Edit HTML. As usual, create a back up of your template before you make any changes to the template. Once the back up is done, proceed to step 2.
2. Search for the following piece of code in your template.
So, what does this code do with my blog? To keep it very simple, assume that a person searches your blog on any search engine, say Google, then he/she would see a description written by you beneath the name of your blog as shown in the picture below. When it comes to a post page, that is, if he/she searches for some content, say "Add meta tags to each blogger post", then the post title would be the meta description that appears on the post page.
Do you wonder what benefit your blog would get by making this small customization? The answer is very simple, better search engine ranking which in turn means more traffic. Another advantage would be like this, if your blog and another blog has got the same traffic and if you had installed this tag it means you have a better edge over him and I'm pretty sure you will receive more hits than the other blog.
I hope the above customization will help your blog rank better than before in the search engines. I tried this on my blog and I felt it was pretty effective. So, I hope even you feel the same. Please, feel free to share your views via comments!!!