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(PhysOrg.com) -- During the past few years, CERN physicist Dragan Hajdukovic has been investigating what he thinks may be a widely overlooked part of the cosmos: the quantum vacuum. He suggests that the quantum vacuum has a gravitational charge stemming from the gravitational repulsion of virtual particles and antiparticles. Previously, he has theoretically shown that this repulsive gravity can explain several observations, including effects usually attributed to dark matter.

Small businesses are always thinking about clever ways to save money, and cab drivers are no exception. Driving a taxi is a small business and a tough one, especially in San Francisco, where I live

YouSendIt shows how testing your marketing, offers, and pricing can radically improve your business results. Five tips on making it work for you. Freemium company YouSendIt is known for its service that sends files too large to move through email.

Web visitors dont want to hunt around your site to find what they need. Dont make them.

How better to judge loyalty than by seeing which of your employees would come to your aid at two in the morning. For anyone who has known me for any period of time you will, from time-to-time, hear me extoll the virtues of the 2:00 a.m. test.

Your customers that is. If you're spending tons of money on attracting new customers, you're making a mistake. If you’ve ever tried to explain the concept of "make new friends but keep your old ones" to a five-year-old, you have a pretty good perspective on how many high-growth businesses approach customer acquisition and retention.

Two years ago, when I first wrote about accelerator funds, they were something of a curiosity. Give a team of smart engineers enough money—usually between $15,000 and $50,000—to keep them in ramen and air mattresses, mentor them, and then put them in front of investors.

Take advantage of this fantastic offer, 20% off from the official prices for the remaining of 2011! All cruises include our `All inclusive light`-concept including - 52 feet DeFever motor yacht - Your own crew consisting of captain and butler - Half board meal concept (breakfast, lunch, coffee and drinks in connection to these meals) - Concierge services - Water skiing with instructor - Rib boat - Snorkeling equipment - Fishing equipment Additional costs - Mooring fees (usually not applicable depending on route) - Dinner