Domain, and non domain

[Wordpress_guy]

I think google consider a blog as other sites and rank on its popularity, clicks and views.

I think it is not blog which consider as other site. but your sub domain.

however, for me install in paid hosting is much better, since you can customize what software, plugin, theme you want to choose and you can make money from it.

[majali]

Google treat websites and blogs in the same way, Google does care about backlinks and refreshment. But if the blog has third level domain name, every back link you support you sit with will support the two domains 2nd and 3ed that will give less value.