If you have some luck, your pages get a satisfactory traffic along with your products related keywords oriented / targeted visitors, through search results pages in Search Engines.
However, it could be an unstable situation. Because such traffic is controlled (of course, not intentionally) by Search Engines or should say : depends on Search Engines.
You can enjoy traffic through Search Engines, but you have to think how you take more advantage of the traffic you enjoy.
One of many tactics would be a community portal where visitors would become part of your portal. A webspace where people visit again and again.
What kind of community portal ?
It's up to you. It could be a social networking style, or topics and comments, or game, etc.
Or, little by little, you can add each contents or services you want to add to the portal.