Is it a good idea to place adsense on blogspot and focus on promoting your blogs there? Or should use own domain?
Mostly, it depends of the competitors in your area. If they are strong and you expect high profits, it is better to use your own domain address. But playing as blogspot subdomain can bring you some profits too. But custom domain is better in long term.
blogspot is the easiest way to get approved by adsense. However, if it is posible, i will suggest you use own domain name
I am trying to include adsense to my blogspot, but it seems that it's having issues such as error 313. Hopefully I can try it soon.
Well for beginner nor pro if you know how to make a web page and making it hot. Then it's all you need. Blogger on blogspot do make money. It's how you would use your niche and also getting more traffic's.
The best is that it is free and adding blog post is as easy as 1,2,3 because partly some of the SEO and designing stuff has been taken care off. The downside is that you don't own the domain that you work so hard to build.
Get your own domain.. It will give you more flexibility. But, many people doing just great only with blogspot blogs.
It is possible to make money from blogspot That is also a cheap way to earn money from Adsense. But it should be better if you own a domain.