In SEO, Article submission, Forum posting, and Social Sites are helpful:
In article submission, posting on a high rank relevant blog, helpful for generating good traffic. Left low rank of article submission sites.
Use high ranking of social sites because not be helpful gaining keyword rank.
Forum posting is a useful and good source for generating traffic as well as for getting backlinks. It is taking much time but you have more replies, posts, or answer ……. Your profile getting a high rating.