The day that linux is good at games-

-is the day I wont have to use the self breaking windoze anymore, Now guys tell me again why no one has made a thing for linux so it will play games well. 

What do you all mean by 'part of the OS'? If you mean 'part of the distribution', then of course, a clipboard should be part of that. But if you mean 'the kernel', then obviously it would be bad design to include it there.

What you'd want is a standard, for a clipboard protocol/API, so that the actual implementation used by the user or expected by a program wouldn't matter.