...on the internet?

Lets say that I'd like to see my score in some Xbox game and then show it to my freinds. Is there a site that shows all loaderbaords or is it up to individual game publishers to provide this?

Probably only on the game's homepage

Got a good score in S&K to brag about =p.

Yea probably the sites homepage.

I beat it last night without even trying and made the top 20. Should be number 1 after tonight as I'll go for crazy score attack... :)

Nicely done with your ranking. 

I would imagine that it is up to individual game developers to handle leaderboards.  Unless the developers are using MS supplied functionality for leaderboads.  In that case, if you were a developer that had MS permission, you might could get the data from the Live databases.  I think XNA provides functionality for leaderboards, so in that case, there could be the possibility of a Live wide leaderboard monitoring system.  That might be something cool to look into.  Might have to shoot someone at MS an e-mail.

Getting the top score in S&K is annoying people are just jumping till that board you get sometimes at a level...

Thats a good advice. I'll see how my score run goes today and then ill go from there... :)

Do explain. I don't know of a single place in S&K that you can get your score up by jumping over and over...

Sometimes at an end of a level a board falls from the sky.  You can jump against it to get 100 points and it will bounce again so you can jump again for 100 points etc.  

People are doing this;...jumps ten times against it;...Save;...then ten times again....Save....if they fail they load the game;..

I guess you get what I mean now...