Blogvertise is a service which allows you to earn money from your blog by writing sponsored posts on your blog. All you have to do is to register your blog with Blogvertise at the link-
Then you wait for your blog to be approved. You might be put on probation status if your blog has very few posts or is less than 60 days old. Then you will be given some tasks which you have to complete by a given date. After you post and complete all tasks assigned to you, you earn money for your posts which you receive via your paypal account which you can create via Blogvertise. Blogvertise is a quick way to earn money. At least it’s faster than Google Adsense. Blogvertise is the best way to earn money if your blog is old and has more than 30 posts.