Every year when I walk vendor floor at ad:tech I see the same companies - except they have new brands, business models and logos. Around 2003 everyone was a search marketer, in 2007 every vendor was in the business of "connecting you to your customers". This year everyone is an ad network - banners must be making a come back.
Here are some other observations:
Only 2 video production vendors. In the last 6 months I've seen quite a bit of video being integrated into websites very effectively. Not just a port of TV commercials but something between informmercial and TV commercial in length and depth - I think there's a big future in video.
Still a handful of local search companies. Frankly I think this is a lost cause. The web has never done local well and mobile looks poised to take it over. In other words, it seems to me that local advertising in a digital format is going to essentially skip the desktop and laptop and really explode on mobile in the next 5 years.
With the proliferation of PPC costs thanks to the success of Google's Ad Words program, I see a huge opportunity for organic SEO to jump start again. On one SEM campaign recently we were paying as much as $30 per click! A little long-range planning and investment in content and link building seems to make more sense than ever - yet I saw very few SEO companies at ad:tech and some of the industry leaders were noticeably absent.