It is not the WordPress or the Blogger which is going to add to your income automatically. Your earnings either from the WordPress or the Blogger will depend on how much hard work you put in or how best is the quality of your writing. Your earnings will depend on the SEO and other techniques you employ to draw traffic to what you have written. It is your originality, your style of writing and your popularity on the internet which is going to help you earn more from online writing. However, a few general guidelines are given to draw out the difference between the two platforms Blogger and WordPress for your better judgment of the two:
Blogger is easy to understand, but you have to search for plugins from sites like bloggerplugin. You can use cool templates provided but it is advisable to search for more templates at sites like splashytemplates or bloggerthemes. You can work fast even if you have a low internet speed. You do not need much investment and technical knowledge to be a blogger. It is not necessary to spend money for web hosting. Buy a cheap domain name from sites like GoDaddy with very small amount of annual payment. There is not much fear of a blog being hacked.
You need to spend time to learn and get adjusted with WordPress. You need to search for your needs from a huge plugin store. There are a large number of free templates but you don't get dynamic views. You need a fast net speed to work with WordPress. You can turn your blog to be a guest blog for others to write on your blog which is not possible in Blogger. You need to invest more for web hosting. Of course, the WordPress is a safe platform like Blogger but the number of hackings have been reported more in WordPress.
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Lead Editor & Platinum Member at ISC