You want to get high page rank resources profile creation in suits for you. Normally everyone know this is the one of link building method easy to create profile in lot of sites but everyone doesn’t know the impact of this submissions .You can get authority external links for branding resources easily got ranking high in search engines.

For example
Your website was book selling store. You can get two relevant resources one for flip kart and another one for book selling store
Both are relevant niches based on your business
In which is pass more value to you..

Flip kart has more authority on this topics. Even flip kart has more powerful link profile than any other site involved in book selling
Finally it has high page rank and pass more page rank to your websites that it links to you. 

finally every internet marketing services company should follow this type mechanism to create valuable resources from top branding company. even most of seo services firms in india also tend to know about this method.