Using keywords in place of name while blog commenting, is required to get rank in search engine with same keyword ???
Yes it will help you if you will place your targeted keyword in name section and link it to your site.
Yes off course it will help as you said now can u tell me how can i put it to other blogs that use disqus and intense debate.
Is blog commenting still active? If so how I will get started to rank me keywords high like business consulting, business help, business plan etc..
Yes this the way to do blog commenting, Use Keyword instead of Name and try to put keyword link in message box if website allows.
Using anchor text as your backlinks is an old and popular method of gaining traction for your site. Be warned tho'. The latest changes in Google's alogrithm for site ranking(Panda, Penguin, EMD) means that too much anchor text with your main keyword can seem unnatural to Google and this will affect your rankings for the worse. Keep your keyword anchor links to no more than 20% of a much more varied link policy.