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Dennis Crowley, inventor of many things good, including Dodgeball (the social Web tool, not the terrible movie or the gym game Justin and Wilson can't play because of their thick glasses), joins The 404 today to talk about some interesting stories from the Web and his latest social Web tool, Four Square.

Today, we go a bit back in Web 2.0 history with the first Twitter/Loopt social-networking tool, invented by Mr. Crowley, Dodgeball--from its inception, to its purchase by Google, to its eventual shutdown.

Not to be deterred, Dennis is back at it again with Four Square, another social-networking tool, where users can compete with one another and earn badges and points when they hang at certain places. It's available for both iPhone/iPod Touch, BlackBerry, and SMS. We encourage you to check it out and report back to us, whether it improves your social life or earns you a "Douchebag Badge."

Also on today's show, we get to some voice mails about Buzz Out Loud infringing a little too much on 404-territory. It's no surprise, given our general awesomeness. In actual stories, we've got Justin Yu's review of the new "X-Men Origins: Wolverine" movie that his "friend" let him watch through a telescope in another room.

We learn through the new Digg Bar that young, white males binge drink. You can thank the U.S. federal budget deficit for that wonderful, no-duh study.

Per usual, send us a voice mail, especially about your social life experiments with Four Square, at 1-866-404-CNET (2638). Or via e-mail, if you're international, at the404 [at] cnet [dot] com. More guests coming up, including an appearance by Dan the Mantern and Alison Rosen.

AUSTIN, Texas--A couple of days ago I wrote a story suggesting that the Twitter saturation level here at the South by Southwest Interactive (SXSWi) festival was so high that the service's value was being affected.

Now, after four full days here, I think that conclusion is worth a reality check: Twitter is out-and-out dominating SXSWi.

To be sure, the massive numbers of tweets that are being posted using the "#sxsw" tag is making it more difficult for those using Twitter to find specific information than was the case at SXSWi 2007 or SXSWi 2008. But the reality … Read more

AUSTIN, Texas--"I couldn't be any more psyched for how it's taken off," FourSquare founder Dennis Crowley said of his brand-new mobile social-networking application, which made its public debut here at the South by Southwest Interactive Festival. "It's been, like, 5,000 times better than I expected."

We were wearing bathing suits. A fellow hardcore FourSquare user, media consultant Rex Sorgatz, had used the service to announce a "bikini flash mob" at the rooftop pool of the Omni Hotel on Monday afternoon. When about 20 people had showed up, Sorgatz--in a … Read more

A correction has been made to this story. See below for details.

LAS VEGAS--Olympus has declared an end to the megapixel race.

"Twelve megapixels is, I think, enough for covering most applications most customers need," said Akira Watanabe, manager of Olympus Imaging's SLR planning department, in an interview here at the Photo Marketing Association (PMA). "We have no intention to compete in the megapixel wars for E-System," Olympus' line of SLR cameras, he said.

Instead, Olympus will focus on other characteristics such as dynamic range, color reproduction, and a better ISO range for low-light shooting, he said.

Increasing the number of megapixels on cameras is an easy selling point for camera makers, in part because it's a simple concept for people to understand. Even though having more megapixels can enable larger prints and enlargement of subject matter through cropping, adding megapixels comes with some drawbacks.

For one thing, smaller pixels can mean more noisy speckles at the pixel level and can reduce the dynamic range, so brighter areas wash out and darker areas become swaths of black. For another, images take more room on memory cards, hard drives, and Web servers, and cameras need more powerful image processors to handle them. And yesteryear's cameras already had plenty of pixels for making 8x10-inch prints, a size few people exceed. … Read more

LAS VEGAS--Olympus has set a ship date, albeit one with a lot of wiggle room, for its first high-end compact camera using the Micro Four Thirds technology.

The camera maker first showed a nonworking "concept model" of the camera at the Photokina show last September, and the same model is on display here at the Photo Marketing Association (PMA) trade show. Now, though it sports a label, "launching this summer." … Read more

LAS VEGAS--Panasonic's camera group isn't happy with its U.S. market share and is working on a new marketing plan to improve it, executives said Tuesday at a photography show.

"In looking at the U.S., we have not positioned the Lumix brand to our satisfaction," said Panasonic Executive Vice President Robert Perry at a press event at the Photo Marketing Association show here.

The company has No. 1 digital camera share in France and routinely is first or second in various other areas, but it's working to fix its sales problem in the United States, he said. Specifically, the company has begun a market review, he said.

"Over the coming months, we will see many changes," trying to win the hearts and minds of buyers and trying to fire up the resellers "whom we need to get behind the product and support it and make sure they communicate our value proposition," Perry said. … Read more

Compact-camera manufacturers have started testing the waters with some cool high-end features as they search for new ways to gain revenue, market share, and recognition. CNET News reporter Stephen Shankland goes over a few of them.

Plus, is a $99 iPhone on the way? That and more on Wednesday's CNET News Daily Podcast.

Today's stories:

Cellulosic ethanol could compete with gas, study says

Solar energy 'power towers' to light up California

Apple gearing up for $99 iPhone?

High-end ideas reshape compact-camera market

Google surges in U.S. search engine rankings

Microsoft promises Windows Azure savings… Read more

Compact-camera manufacturers have begun testing the waters with a wealth of high-end features as they search for new ways to gain revenue, market share, and recognition.

In earlier digital photography days, a camera with an extra megapixel of resolution, face recognition, or image stabilization could stand apart from the herd. But now that herd has grown larger, most folks who'll buy a digital camera already have done so, the economy has put consumer spending on ice--and camera makers are making some bolder bets with high-end features.

Among them: Nikon's built-in GPS support to record where a photo was taken, Casio's high-speed video, and the Micro Four Thirds camera system from Panasonic and Olympus.

Premium features aren't an easy sell. They tend to appeal to market niches rather than the mainstream. Early implementations are often rough around the edges. And it's hard enough to convince people to buy a new camera, much less one with the higher price of premium features.

But winning those customers can have a good payoff with better profit margins. And that's critical in this day and age. Market research firm IDC expects that after years of growth, the shipments of digital cameras will decline in 2009.

"It's crowded, and it's getting crowdeder," IDC analyst Ron Glaz said of the digital camera market. "We're anticipating that with the slowdown in economy and disposable income, we'll start seeing consolidation of the vendors." In other words, even though something in the neighborhood of 38 million digital cameras are sold annually, some companies will throw in the towel. … Read more

Panasonic's $670 G1 and Olympus' $540 E-520 and $450 E-410--that show both the advantages and disadvantages of the Four Thirds standards the companies use.

The Four Thirds system governs image sensor sizes and the mounting mechanism for interchangeable lenses on the companies' SLR cameras, and the companies announced a new variation called Micro Four Thirds for smaller cameras that have SLRs' interchangeable lenses but not SLRs' "reflex" mirror, which directs light through an optical viewfinder before a shot is taken.

Four Thirds SLRs have a smaller sensor than lower-end SLRs from market leaders Nikon and Canon, which poses image quality challenges because there's less surface area to gather light. However, the sensor size is the same for Four Thirds and Micro Four Thirds, which means that cameras using the latter have a much larger sensor than typical compact cameras have. … Read more