What does the company do well? Visage is a tool for collaboration. You can manage your visual assets across your team or department. This allows your team to collaboratively design branded communications, that can be shared either socially, or downloaded and incorporated into other communications. (You can upload your logo and other branded visuals).
What does the company not do well? Visage is recently out of beta and lacks some functionality (though new features are consistently being added, since I started using it a few months ago). Visage lacks a graphic library to tap into. Its a great resource if you already have the graphics you want to use. Once you have them you can upload them and share them with your team.
What do you wish you had known about the company before using? As a company we were struggling with the visual side of content, especially while socializing it on social media. It's an easy tool to learn how to use and also to teach others. It will give your content a visual face lift and make it more shareable and consumable.