Direcotry submission and much more
Plenty reasons also exist for not doing Seo yourself. Time is the big one. Since time is money, how much is your time worth? Professionals who do online marketing for a living have plenty of time to hone their skills and do the research to stay on top of this constantly changing game. To stay ahead of SEO tricks that undermine their search engine's purpose of providing users with quality, highly relevant results, for example, Google makes frequent revisions to its search algorithms. Then there are other businesses out there, all vying for a spot on that coveted first page, which will displace a website at the top in minutes, if you are not constantly watching.