As i write this, the tradeshow floor here at Blogworld has been open for a little over an hour. I’ve made the rounds of the various booths and come up with my best picks:

Most innovative: Zemanta

Zemanta is a very cool tool for blog authors. As you’re writing a blog post, it analyzes the context to automatically suggest relevant images (creative commons-licensed), tags, external links and even related blog posts, all of which can be included in your post at the click of a mouse.

Zumata has the potential to help bloggers save time, write better and more interesting posts, and gain traffic. They are not monetizing it at the moment, but I can easily see them selling sponsored content recommendations tailored to the content of a blog post.

Most promising: Crowd Science

Crowd Science is a hosted audience measurement service. If you have a web site you want to sell ads on, you’ll want to provide your advertisers with demographic and psychographic information on your visitors. Most audience measurement services rely on observing the behaviors of a panel of web surfers, but many sites do not have enough traffic volume for such a panel to be effective.

Crowd Science’s approach is to host inline surveys embedded within the web site being measured. The surveys all contain a base set of common demographic questions, which site owners can enhance with questions specific to their vertical. The surveys are only delivered to a sample of overall traffic, and once enough data has come in, site owners can use it to create a media kit with data validated by a third party.

Most interactive: Toss up between b5media and Southwest Airlines

There’s a poker game going on at the b5media booth. You get get free chips by wearing b5media schwag, yelling out “I love b5media,” or the like. When in Rome do as the Romans do. And when in Vegas, well… here’s a crappy cell-phone photo of that poker game:

It’s great to see a big company that gets social media, and it doesn’t surprise me one bit that Southwest Airlines falls into this category. Southwest is holding a “blogospondent” where participants film and post videos about Southwest. They flew the top three contestants to Vegas for Blogworld, and they now have until tomorrow to produce a video. Oh, and they handed out roasted peanuts in the a

Are you at Blogworld and do you agree or disagree with this list? What are your favorite picks from Blogworld? Leave a comment below.