People want to see action and progress, no matter how small. They want to hear about milestones and rave reviews. Even if you’re not adding new users and customers rapidly, you can still show momentum within the company and product. And if product updates aren’t forthcoming, hopefully you can be forthcoming about why. There are many different ways to make and measure progress, the point is to share them with your community regularly.
Traction by pal Brian Bailey. He's talking about how to get a new app off the ground, but this applies to any kind of business. Communication is winning.