An extension or accessory to a real-time, online virtual collaboration session, meeting and messaging system, which scans a participant's contact list for partially complete contact records, accesses an administered contact information store such as a corporate personnel contact database, and completes the partially complete records in the participant's contact list. This enables each participant in such an online meeting or conversation to rely upon his or her contact list to contain a consistent level of information regarding each participant in previously conducted meetings and conversations, avoids the entry of inaccurate and deceptive participant information into the contact list, and allows for reliable communication to the members of a participant's contact list.