By Sherron Lumley Bringing in new clients, improving cash flow, and finding new sources of capital are a perennial challenge for every business—for small businesses even more so. But now, thanks to the Internet and social media, entrepreneurs have access to many of the same powerful marketing tools, business networks, and customer groups that were once the private domain of Fortune 500 corporations. The trick, of course, is how to use these new tools correctly. The first step on this...