We are using Frill to collect user feedback and feature requests, as well as post announcements about new feature updates to our users.
I love how easy it was to connect Frill with our own system, including SSO support for seamless users authentication. We also integrated the Frill widget right into our product user's dashboard so it's easy to distribute announcements and collect new feature ideas this way.
One of the most satisfying product experiences I've had with a tool for our business. Their customer support is top-notch as well.