Nearly a month since it went missing, Flight MH370 has still not been found. The Malaysian police are conducting a criminal investigation into the plane’s disappearance, but have admitted they might never discover why someone switched off its communications and diverted it thousands of miles off-course. They have considered various hypotheses – mechanical or electrical failure (eg fire on-board or decompression of the aircraft cabin), terror attack (eg bomb on-board or hijacking), human factors (eg pilot error or suicide). But nothing is proven. Into this void of interpretation pours an internet-accelerated stream of conspiracy theories (eg Freescale patent coup, Diego Garcia forced landing, shoot-down, cyber-hijack). Is this an example of the crowd-sourcing of alternative hypotheses to help investigators? Or is it a result of moral panic, social prejudice and undeclared special interests? What’s needed is the tracing of the passage of conspiracy theory back to its origin to evaluate its trustworthiness (eg the cyber-hijack theory derives from an ex-UK government adviser who runs her own risk management business). We can start with the #mh370conspiracy Twitter stream.