If I am not mistaken, this is the first article based on web collection of personal networks. Scholars for the first IRDL program cohort were sent links and filled out their own social network questionnaires. They were not the first respondents to this type of data collection but I believe it is the first publication of data collected this way. We originally designed EgoWeb for a study of homeless men with face to face interviewers using laptops without an internet connection. The “web” in EgoWeb was aspirational at the time, but eventually we made it work that way also.
It is also the first longitudinal personal network study, although the EgoWeb longitudinal features were not functional yet before this data collection happened. We are now analyzing the second IRDL cohort data and that has linked study files across waves.
Both the longitudinal and web interview features are described in the egoweb.wikispaces.com advanced features page.