The event was prompted by Merlin's realisation that not many Twitter users had experienced the London Eye.
The entertainment giant managed to fill , with reserve spaces, within five minutes using the social networking site, leading it to be dubbed "the fastest event ever organised".
Guests were offered the chance to download a new digi-guide. The hand held technology knows where you are standing and pin points landmarks of interest, viewable within a 40km radius of the London Eye's glass capsules.
Touch screen technology allows users to zoom in on the landmark of interest and hear information and history on the chosen place.
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