User Maosud joined 2 days ago and asked this question about placing a div over an iframe "from Photosynth.net".
A few hours later Rashid (who joined 7 days ago) asked this question about putting a div over an iframe, showing the source of the iframe as being from photosynth.net
1 hour later user ahmed (who joined 3 days ago) posted this "answer" to that question; summarized: "thanks all for reply and sorry for miss understanding [...] wiating the answer and thanks".
Similar questions, English usage, rep, joining time frame, and ethnic usernames is not much to go on. As a non-moderator can I see IP addresses? Is there anything that should be done about these possible duplicate accounts?
Because of the activity tabs of their profiles, I don't think these users are sockpuppets. They could just be on the same team. Or, there might be no real affiliation with Photosynth; it could be a homework assignment or example of some kind that uses photosynth.net that as an example URL.