Notch and his fellow companions is probably tired of everyone spamming the SSP forum with everything from errectal problems to a spanish chick claiming to own the sun. And inbetween thoose two there are alot of people posting bugs and idea in the SSP forum aswell, which doesn't belong there and makes the forum really messy.
It will probably be easier for them aswell to see what people want fixed and implemented in the game.
This new thing is the Bug and idea-tracker at Get Satisfaction.
Just make sure you are in the right part of the webpage, there are four different sections. "Ask a question", "Share an idea", "Report a problem" and "Give a praise". Post in the right section or this page will be as messy as the forum!