Of all the 25 billion tweets this year, the Gulf oil spill was at the top of the list.  Second place went to the FIFA World Cup and the vuvuzelas that made watching it so excruciating came in fifth behind the movie "Inception" and this year's earthquake in Haiti.  The iPad, Google Android, Justin Bieber and the new "Harry Potter" movie and the psychic octopus also made the top trends list.