No. This is a conscious decision not to include this feature.  We have attended many events who use mobile apps that allow people to blind connect, send direct messages, and post into group forums. Every time we end up deleting the app because the notifications and volume of unread requests simply overwhelm us. Feedback from attendees at our events tell us that these activities reduce their desire to download the app and as a result have a substandard event experience. We chose not to include this in our app to keep it focused and a usable tool for everyone to get the best out of your event.