Answer:
How are online users experiencing addressing privacy issues on social networking sites?
Step-by-step explanation:
A research question is a question which a group of researchers seeks to answer and it is important as an element of quantitative and qualitative research. Getting the answer to the research question requires data collection and analysis.
Therefore, the best revision of the research question, "Are social networking sites harmful?" is How are online users experiencing addressing privacy issues on social networking sites?