Updated Content
To attract your first time visitors to come back and to keep coming back, you must always have what to offer: nobody will keep returning to see the same pages all the time.

Involving Your Visitors
If you want people to come more often, I would recommend involving them somehow in parts of your website: this could be an online discussion forum, blog, or just simple option to post a comment.

Create a Membership Club
Another option of involving visitors into happening on your website, is to invite them to your membership club, this could be as simple as just sending them a monthly online newsletter.

Good Navigation
Having a good navigation is also important to the indexing of your web pages. There is nothing worse than arriving at a website and having difficulty understanding where to go for the information you are seeking. Have easy to use, clearly marked navigation so that your visitors click through instead of click-away in frustration.

In-site Cross Linking
Get all of your web pages indexed by the search engines by implementing your sitemap. Your web pages should be no more than three clicks away from the home page. On every page you should link back to your home page and your main service(s) or product (s).

Web Site Design
This is also important, if you want to get indexed. Text content should outweigh the HTML content. The pages should validate and be usable in all of today’s leading edge browsers. Rather stay away from Frames, Flash, Javascript, Image Maps, and Dynamic URLs, search engines dislike them all a lot.

One prudent tool to use is the “alt” attribute of pictures on your site. You simply describe the pictures and these descriptions can include your keywords.