1. People share content:
A site with great content is much more likely to generate social shares, and word of mouth advertising.
2. The Search Engines rank better on fresh content:
Search engines ranks sites with fresher content better, and are more likely to regularly crawl your site for updates. Content based sites also are ranked for a wider variety of search phrases that sites with a few pages.
3. People will return to your site:
As your website is frequently updated with new content, visitors are more likely to return to your site to gather more knowledge.
4. Content sites are easier to market:
A website offering useful information is easier to promote and generate traffic than a website purely based on corporate propaganda.
5. More people link to content sites:
Your content based site is also more likely to get links from other sites which increases your site rank and in turn increases traffic from the search engines.