Effect

The mentalist asks a mobile phone to a spectator, announces that it is going to make a search on internet and once is done, leave the phone on the table
asks the spectator if he had to find something on internet, that would look for and where you do it? The spectator named for example an online auction page and that will seek for a pitcher

Under these conditions, the mentalist ask the spectator to take his mobile phone and look which was the search done

Under such conditions the spectator will find; A search on ebay a pitcher The spectator could named anything, but nevertheless, the prediction will always be 100% correct.