Better blogging- from Compendium

Online marketing and search marketing requires some off-site promotion as well as on-site promotion.

Promote your corporate blog on your website. A link is great, aggregating your feed is even better!
Promote your corporate blog in your email signatures.
Promote your corporate blog in your business cards.
Promote your corporate blog posts via Twitter using HootSuite.
Publish your corporate blog on Facebook using Simplaris Blogcast or the Blog RSS Reader.
Promote your corporate blog posts along with other industry-specific posts using StumbleUpon.
Save your corporate blog posts with specific keyword-driven tags to Delicious. I recommend the Delicious Firefox add-on to make this easier!
Comment on other industry blogs and be sure to use your corporate blog address in the URL field of the comments, not your website url. People like to follow a blog from a great content!
Offer other industry bloggers a trade to guest post on each others' blog. This will expose your readers to their readers... and their readers to you!
Mention industry thought leaders in your corporate blog posts. Folks in the industry pay attention to who is talking about them. If you write a post worthy of mentioning, you'll get their attention, their audience, and if they link - some great authority.

Don't just leave it up to search engines only to find your content - promoting your content can drive traffic and backlinks to your blog. When you grow backlinks to your blog, search engine traffic will increase, too!