NEW YORK ( TheStreet) -- What's happening in small business today? 1. Yelp is stepping up a crackdown on fake reviews.Yelp ( YELP), which relies on user reviews to recommend local businesses, says it will put an alert on a company's profile page for a minimum of 90 days if it "suspects that a business has tried to buy fake, misleading reviews on its site," says Huffington Post . According to the company some businesses go to "extreme lengths" to boost their positive reviews, in some cases paying people to write them. Customers can click on the alert to find out more information, the article says. 2. Jack Dorsey is giving answers to the toughest challenges for small companies. True to form, tech entrepreneur Jack Dorsey, co-creator of Twitter and Square, is offering his thoughts in "tweet-sized bites," Forbes.com says. Some of Dorsey's solutions as pointed out by Forbes include: To convince skeptical investors and customers of the value of your product or service: "By operating by the simple principle of 'show, don't tell.'" To scale an idea into a large company: "The organization you build should be the key and only focus. And realize that small teams throughout history have done impossibly audacious things. You don't have to be large," he says. To maintain quality personnel while rapidly expanding: "Be direct that you are going to constantly raise the bar of the team. I'm always looking to hire people that are better than me. I learn from them, and the organization moves faster," Dorsey says. 3. There's advice on how to manage your start-up's hypergrowth. Having strong sales and being able to hire employees is always a positive sign for a start-up, but as the company grows is there a common understanding of systems, structure and shared values? Strategy consultant and start-up investor Peter Cohan shares his suggestions on how to manage rapid growth on Inc.com. First, Cohan says, establish a project team that includes key direct reports, representatives of your leading customers and suppliers and possibly an outside consultant. Once the team is formed, figure out some of the biggest challenges your company faces as it expands. Talk with other start-up CEOs and experts on how they've managed these issues. The results from the discussions with peers should lead to ideas on how to improve your start-up's structure, systems or shared values. But before implementing them, benchmark your start-up against best practices learned to identify where you can improve. "Fast growth in a start-up is a sign that customers like what you're doing. But if your organization can't keep up, your growth could quickly reverse. Follow these five steps, and you'll lower that risk," Cohan writes. -- Written by Laurie Kulikowski in New York. Follow @LKulikowski To contact Laurie Kulikowski, send an email to: Laurie.Kulikowski@thestreet.com. >To submit a news tip, email: email@example.com.