The American Express OPEN forum has launched a new tool called OPEN Forum Pulse allowing small business owners to share Twitter posts through the site. The new site displays tweets from OPEN forum members and helps them promote themselves and connect with other small businesses. Users can sort the latest tweets by industry, current trends, or keyword. American Express OPEN, the financial giant’s small business unit, found that nearly 60% of entrepreneurs feel challenged in finding innovative ways to market their business — but only 10% are turning to online social networking, based on a recent survey. Read the full story at Media Post.