MTV said its eyebrows were raised after Sony announced the figure and decided to contact the company for clarification
"The PSN numbers (17M and 2.1M) include people who have created accounts on PS3, the Web site and PSP," said a Sony rep.
"Note that since the implementation of single sign-on, PSN ID and PlayStation Underground IDs (which were often created at the same time when first making a PSN ID) were automatically merged and rolled over."
"Additionally, since PSN is a free online gaming service, some households create multiple IDs so that a father can keep a separate list of friends, trophies and stats from that of his daughter for example," added the spokesperson.
More through the link.
By Mike Bowden