Abbreviation for Cyber Displays of Affection. Similar to PDA but instead is broadcasted online for all to see on sites such as Facebook, Myspace, and Twitter.
What's with all the CDA on Facebook? I just saw Johnny's status update: "I can't wait to get home and kiss my beautiful wife!" And Mary's says: "I'm in love with the man of my dreams!" It's just as bad as PDA.