Rishab, Some bloggers depend on SEO extensively and some bloggers like me, we depend on adding value to our readers. So, therein lies the difference. Anyone who has better knowledge of SEO can certainly get their websites to rank faster, drive loads of traffic etc. But at the same time, when content is unique and useful, you will eventually get there and remain there. If you want to build your search engine credibility and show up even after 2 or 3 years, then value is most essential. I am not against SEO practices( I adhere to standard SEO too), be it White, Grey or Black hat, but with continued algorithm changes, only content and valuable knowledge will sustain.