Someone that study computer science or something like that and told me what is the big deal about this , what is the special thing about,? it is the backend algorithm ? maybe this have porcion of I.A or Genetic Algorithm or Probabilitys metrics?? I dont know. to me this is just make a request using ajax to the db youtube and search for the most relevant search recently made (maybe 1 hour o 15 minutes i dont know) 3 hours or less look a pretty razonable time to do this,.. but maybe i'm wrong about my conception, somebody could please give an explanation about this? what's the big deal ????