I follow only organic and quality seo terms
#onpage:- meta tag optimization, content optimization, keyword research, internal linking strategy, keyword density/proximity, website usable and accessible for search engines, webmaster google/bing/yahoo
#offpage:- profile creation, business listing, corporate linking, online reputation management, forum postings, blogging, web 2.0, social media optimization, quality incoming links only with high pr, review posting, competitor analysis, article, press release, bookmarking, quality and niche specific directory submissions
And much more...