Bina, I agree your opinion.
To get indexed by major search engines that send massive surge targeted visitors to blog freely, blog needs hundreds of backlinks (at least 100) from websites that have high PR (Page Rank). Article marketing are good strategy to generates hundreds of backlinks and increase blog PR freely.
I found good tool that generates hundreds of backlinks by submission of article directories. And help blog owner to increase blog PR. This tool helps you save a lot of time and get the good result:
[Affiliate link deleted. Admin.]