Google has provided a big features in adwords for his user. now you can login multiple adwords in single window without login to other account.

SEO is the industry who will never down and you can make your future bright in this field. I will suggest you that you should go in PPC for more growth.

what is abstract meta tag? why we use it on website.

When you add your blog site to adsense then you have added your information also. If people will visit your blog and click on these ads and visit is genuine then google will pay you for it.

What is link velocity?