Here is a hack that will change the title to the following attractive format Post Title + Blog Title This trick will help you to optimise the blog title for Search Engines like google yahoo, live bing and others. Using this Hack i assure you that there will be an increase in your blog visitors.
1.Login to your blogger account
2.From your Dashboard opt for Layout
3.Now choose Edit Html
4.You will see your template code there.
5.In that template code find
<title><data:blog.pageTitle/></title>
and replace it with
<b:if cond='data:blog.url == data:blog.homepageUrl'> <title><data:blog.pageTitle/></title> <b:else/> <title><data:blog.pageName/> ~ <data:blog.title/></title> </b:if>
6.Now opt for SaveTemplate.
7.Affter saving the template take a look at your blog post pages and your will notice the change in title's in your browser's title bar.