Weight weenies

Un sitio con listado de bicicleta y componentes con sus pesos! BUENISIIMO!

I've seen several message boards on the internet
with messages saying "How much does X bike component weigh?"
Often the same parts weight is stated several times further down the board.
I thought why isn't there a website that already lists component & bike weights??
Well that's what I'd like to try and make. Component lists are updated almost daily.