You can contact other Diggz users in two ways. The first, is by sending an Instant Message directly to the other user. We give you five messages like that, but you can earn or buy more. The second, is to Match with another Diggz user and then you'll be able to send him messages. To send messages, please visit the "Matches" page, where you can send messages and see all your conversations. The user will be alerted via email that you have messaged him.
For more information on how to start a conversation online, or what you should cover with potential roommates, check out our full 'how to find a roommate' guide.