Difference b/w WordPress.com and Blogger.com?

[nisha]

WordPress.com is a free of cost Blogging service for people who want to Blog without spending single penny, it uses WordPress CMS for management.

Just like WordPress.com, Blogger.com is also a Free of cost Blogging platform for people to who want to start a free blog. The main difference between Blogger.com and WordPress.com is that Blogger.com is Owned by Google itself and it is based on HTML, CSS, javascript and XML unlike WordPress.com which is Based on PHP and MySQL

[smithcorey]

Wordpress site is more SEO optimised than Blogger.
Also on blogger you can host your website for free while in wordpress you have to buy the hosting.

[nitish]

Blogger is free and there are more chances that Google will approve your post.