Traffic generation is not just about bringing new traffic to your website, as the process' entirety also involves nurturing your audience (growing your returning visitors) for it to be truly efficient.

What are the things that I can do to keep my visitors on coming back to the site?

That's one good question to always ask. And a few answers to this question are:

• Continuously growing your content resources (blog, content assets, newsletters, etc…).
• Building an interactive community within the site (forum, community blog, etc…).
• Providing free web-based products/services.
• Making all of your brand's offerings (ex: Smart Guides, whitepapers, newsletters, videos, etc…) very visible on the site's key pages (as CTAs).

But the main key to really make your site sticky for new traffic is to provide a unique experience (that they'll want to share and utilize again).