I notice that most of the webmaster is more focus on link submission, blogging comment and forum signature. Do you think we should focus more on inter page linking rather than external linking?
both are important, but, I think inter linking is , linking within your blog content and external linking is to other websites
Both type of linking is required to get good ranking. But the ration must be around 40:60 for internal and external linking respectivily.
SEO point of view both inter and external linking are important to have drive website traffic as well as good page rank.
Both are as important as each other. Without link building to the inner pages traffic will never increase.
Both are important the internal architecture of the site should be kept simple and such for both the users and crawlers alike. You would want to make both types of linking better, internal linking and links coming to your site.