Promoting your hub is crucial. You oftern see the same people over and over at the Featured Author and that's for a reason, they publish quality content consistently.

Here at Hubpages you can find alot of quality articles about how to get more traffic, for that jus type traffic in the searchbox.

Here is a quick roundup of y favourite tactics:

1. Pingomatic.com
   Why not? Promote your Hub as if it was your own site get more traffic. Easy

2. Social Bookmarking
   If the content in your hub is usefull to a comunity, why not share it? There are no rules saying you can't promote your hubpages in Digg, del.icio.us, Reddit, etc... so use it.

3. Blog about it
   You have a blog? Use it to promote your hubpages, talk about it, link it, invite people, share your success stories, etc... blogs have alot of power in marketing. Even if you don't get results right away, be patient.

If you are interested in reading more I recomend you read this article and an article by Lissie called HubPages for Internet Marketing.