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Each day, Inc.'s reporters scour the Web for the most important and interesting news to entrepreneurs. Here's what we found today. We still need phone books! That's the rallying cry of some small-business owners in San Francisco, who are campaigning against the city's proposal to limit the distribution of those thick tomes that land with a thud on doorsteps each year

The mobile for health industry in Africa continues to expand. "We can teach larger organizations a lot," the group's founder tells us.

Foursquare's rolling out details of yet another of its new features, a revamp of its merchant platform dubbed "Specials," continuing its recent trend of expanding its core checkin game. Foursquare's Merchant Platform launched in 2010 to "give businesses an easy way to reward their customers and find new ones," but Foursquare has now revamped the system to "give merchants a way to learn more about their best customers and start offering Specials to help them get new people into their location." So says Foursquare's blog posting revealing the revamp.

Nanotechnology developments continue apace: Brigham Young University has pushed the envelope of carbon nanotube tech and shown how to "grow" complex structures from the stuff. Meanwhile the Navy is interested in using nanotech robots to "grow" new nanotech robots. Carbon nanotube logos A team of physicists at Brigham Young University has developed an innovative new way to grow carbon nanotubes into complex structures that are much more precise than has previously been possible

Monsanto, the often-vilified agriculture giant, has made a deal that could actually do some good for sustainable development: The company this week formed a partnership with and made an equity investment in algae fuel startup Sapphire Energy (no word on the terms of the arrangement). What's going on?

A new algorithm identifies the unique writing style hidden in digital communications. The world of anonymous email s and comments could soon come to a crashing end. Researchers at Concordia University have discovered a way to mathematically uncover the unique (and often sub-conscious) writing style, or "write print," of each individual

If you're fed up of reading an Internet peppered with news about Charlie Sheen, then take heart: There's now a browser plug-in that'll censor Sheen-related references for you. If you're fed up of reading a Net full of Apple references, then tough luck--there's real talk that Apple was testing a 64GB iPhone version, as a prototype has leaked. On with the news.

Empty mailboxes be damned, these elegant and whimsical designs make letter openers as desirable as ever. Paper mail may be going the way of the dodo, but thanks to some major design upgrades, letter openers are here to stay.

How were the top companies of the 1980s so successful?

The iPad 2 is here. It will certainly dominate tablet sales this year, but it is not the future of the tablet. The demand for Tablets is forecast to grow exponentially this year and the iPad 2 and its numerous competitors working in copycat mode are all hoping to cash in on this demand

Photo-based life-blogging phenomenon DailyBooth just revealed that it's raised around $6 million in venture capital to grow the young company dramatically.

Have you ever created a Genius playlist on iTunes or set up a station on Pandora? Just plug in one song, and you instantly hear music that matches your tastes.

Anyone who witnessed the wrath of Iceland's Eyjafjallajökull volcano last year knows that the country possesses ample geothermal resources. Iceland has so much geothermal energy, in fact, that it might build the world's longest undersea electric cable just to share energy with the rest of Europe.

Al Jazeera isn't just news. Their next project? An English-language childrens' edutainment network on American TV by 2012

With social media and a unique civic iPhone app, Ecko is making a national issue feel locally relevant. In the United States, every class of citizen, from prisoners to soldiers, is legally protected from corporal punishment--except for children.