You want to host your blog for free, but which is the most reliable blog hosting?
Reliable and Free?
So, which is better? I would say Blogger.
Although WordPress.com offer free account too but there are many limitations, one of them is “no custom css”. You cannot edit nor change your own blog theme. You have to pay to have WordPress.com premium features.
Note: WordPress.com is NOT WordPress.ORG (blog publishing application).
On the other hand, Blogger, which is backed by Google big brother, does not have such limitations and has better offer.
If you are a serious blogger (you want to do it BIG), then you should consider renting a good and reliable web hosting and then install WordPress as your blogging platform (the blog platform of choice among top blogs, too).
I use WordPress and love it!
[Hat tip: Peter Alguacil]