Facebook Like This Gadget For Blogger

1. Copy this code

<b:if cond='data:blog.pageType == "item"'><br /> <div><iframe allowTransparency='true' expr:src='"http://www.facebook.com/plugins/like.php?href=" + data:post.url + "&layout=standard&show_faces=false&width=100&action=like&font=arial&colorscheme=light"' frameborder='0' scrolling='no' style='border:none; overflow:hidden; width:400px; height:27px;'/></div></b:if>

2. Login at your Blogger account http://www.blogger.com
3. Go to Design > Edit HTML > Check at Expand Widget Template
4. Look at <data:post.body/> and paste the copied code before this code
5. Save Templates and Now See yourFacebook Like This Gadget For Blogger

For more customization you can visit Blogger Plugins