For me, one of the most intriguing areas of online marketing is search engine optimization or SEO. Though there are a number of reputable software and consulting firms like SEOMoz, I haven't found a world-class software-based solution to managing and monitoring SEO in conjunction with a broader online marketing strategy.
With the advent of universal search there's also a lot of buzz around digital asset optimization, described in this TopRank blog post. As far as I know, outside of Mixpo very few companies are actively incorporating universal search into marketing.
One of the best SEO-focused companies I know is BuddyTV. BuddyTV has taken an approach to SEO that fully aligns with search engine goals: great content, a deep link structure, multiple media types, and engaging services for user self-expression. One of my favorite features of BuddyTV is the personality quiz that compares me to TV characters. I can put the results on my blog, MySpace page, etc.
If you're interested, here's my result from the quiz about The Office:

More on The Office. Created by BuddyTV
Note to NBC: why don't you have a separate site for The Office? How about fixing the broken links on the John Krasinski page on NBC.com? Are you behind Jim Halpert's page on MySpace?
Not coincidentally, this widget links to BuddyTV.
Great article! Very informative and useful. Keep it up!
Posted by: seo philippines | March 03, 2009 at 03:57 AM