Creating Backlinks from Same Username [Is this a good Idea]

I am building backlinks for one of my inner page url.

I am posting articles, creating blog posts and saving it as bookmark.
Can it be a safe practice to build all the backlinks using a single username.
or
Should i need to use different username on each blog posting sites or in the article directories.

I feel it doesn't really matter whether you use the same or different usernames. What matters is whether you achieve your goal or not. But if you intend to promote your blog, consistency is the best. I doubt if using different usernames will improve your search rankings

I have no idea about this, Good or Bad for search engine ranking