Search Engine Forums, SEO Forum

Basically it is two types, but you need to improve your answer. with Email marketing and other relevant marketing statergies

Both on page and off page SEO are very important for website promotion in search engines. Some on page seo techniques are title, meta tags, meta description, meta keywords, url, sitemaps, robot.txt files. Some off page SEO techniques are directory submission, profile submission, forum posting, article submission, blog commenting, social bookmarking and guest posting.

Some other things are

In On-page
Alt tags for images
404-error page
Website load time

In Off-page

Image Sharing
Slide Sharing
Social Profile Creation
Yellowpages