It's pretty obvious that social networking has entered a new era.

Few new social networking companies are trying to steal market share from Facebook, MySpace or the other big entrenched networks. Instead, they're aiming at specific, lucrative niches.

Five such niche social networks presented a "vertical social networking panel" here in San Francisco at the Techcrunch50 conference. These latest ones target birdwatchers, women wanting help getting dressed in style, dead people, people wanting to connect for good causes, and gamers.

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Birdpost wants to move the existing offline social network of birdwatchers online. Aside from connecting active birdwatchers, it also wants to add in GPS location services to show where species can be located (you can use your GPS-enabled iPhone if you want), and alerts for hard-to-find watching opportunities.

Of course, if you're anything like me, excessive talk about birds makes your watching apparatus glaze over. If that's the case, it's the market size that makes this exciting: 13 million people spending $32 billion a year on travel, binoculars and, well, whatever else birdwatchers buy. As the founder said on stage, “The wealthier a person is, the more likely they are to be a birdwatcher.”

It's hard to make your way through the Internet landscape these days without stumbling across yet another fashion-centered social networking site.

It's hard to make your way through the Internet landscape these days without stumbling across yet another fashion-centered social networking site. Closet Couture is one that's focused on “helping women get dressed.” Users can upload pictures of their (probably extensive) wardrobes onto the service to help pick out their daily digs, or ogle other people's closets in the forums. But the most notable feature is a “stylist marketplace” with for-hire stylists who can help users choose what to wear – and what to buy – for a modest fee. Modest if you're rich, anyway.

CauseCas

CauseCast

OK, so I said that none of these networks are competing with Facebook. That doesn't prevent them from making comparisons to it.

OK, so I said that none of these networks are competing with Facebook. That doesn't prevent them from making comparisons to it. Footnote called itself a “Facebook for the deceased”. The company is launching profiles of 80 million dead folks today, based on public information skimmed from Social Security Administration records. That's mostly just a name, date of birth and death, and last known location, though, so users (the living ones) will be able to add information like pictures, connections to other profiles and stories. But the apparent social networking focus is a bit disingenuous. Footnote's real focus has more to do with the 43 million digitized records the company has, including old newspaper clippings and records like marriage licenses. For access to those, it will charge a subscription fee.

Shattered Reality's

Shattered Reality's