Twitter users are posting about the things they would trade for a Nissan Leaf (or other things they value) with first place and promoted topic "#IWouldTrade."

"#youneedanasswhoopin" and "#relationshiptip101" and "noesgay" follow in second, third and fourth places.

"If it was a such thing called Black Twitter it would be called 'Twidda,'" say microbloggers using fifth place topic "Black Twitter."

Forty-seven-year-old "Pietro Ferrero," the co-CEO of Italian confectionery company Ferrero, reportedly died from a bike accident while he was riding in South Africa.

The name of former Cuban President "Fidel Castro" is in seventh place, "GLaDOS" (short for Genetic Lifeform and Disk Operating System), a fictional character from the recently released Portal 2 computer game is in eighth place and the name of American singer "Faith Evans" is in tenth place.

Anonymous online video chat service "Omegle" is in ninth place on Twitter's most talked about topics after Justin Bieber fans (also known as "Beliebers") overtook the site and "infected [it] with Bieber Fever."

The top 10 most talked about topics on Twitter on April 19 at 7:30 AM GMT are:

  1. #IWouldTrade (promoted)
  2. #youneedanasswhoopin (new)
  3. #relationshiptip101 (new)
  4. #noesgay (new)
  5. Black Twitter (new)
  6. Pietro Ferrero (new)
  7. Fidel Castro (new)
  8. GLaDOS (new)
  9. Omegle (new)
  10. Faith Evans (new)