I heard that Wavemarket was the darling of DEMO, with their location-based mobile WaveAlert tool showing SF traffic jams and a speed trap.

From the company's product page:

"The three components of WaveIQ [WaveMarket technology platform for mobile operators] are:

• WaveSpotter turns cell phones into location-enabled broadcasting and viewing devices. You can zoom around our map-based interface and interact with location-based content, like other blog posts, or even yellow page listings relevant to your location. You can now immortalize when and where you proposed to your spouse, or where you sited a celebrity, or just the best donut shop in town.

• WaveBlog, is where you go to see postings from anywhere that interests you. So, if want to know where the hippest place in town is tonight, just check out the entertainment channel and find out. Or, for how to get there, there's a traffic channel. The number of posts, pages, and channels we host is unlimited, but it's all organized by place and time so you get where you want in just seconds.

• WaveAlert enables wireless operators to notify you when are near something important to you, like a speed trap before its too late, or a good friend who happens to be in your area. Now you get the information you want when you need it based on your location and interests. For the first time WaveAlert solves the tremendous technical challenges required for these services by dramatically reducing location polling rates while also efficiently scaling to millions of subscribers."

WaveSpotter sounds like the Tag and Scan service I reviewed a few months ago, where geograpical tags can be associated with locations, like restaurants, bars, museums, or street corners. WaveAlert is catching a lot of attention because everyone hates traffic jams, and mobile operators could make a fortune on people trying to evade them. I guess I would be interested in WaveBlog, especially if I were in an area where a gazillion bloggers were flitting about. Here in Reston VA, I'm not so sure. But if I were at a conference, for example, it would be great to track down other bloggers.