Clicking the Configure channels link from the Cool Stuff page allows you to customize your Cool Stuff display to include only that information that you really wish to see.
A channel is a boxed set of information with a separate title bar. For example, this is the Cool URLs channel:
To customize your channel display, place a tick in the checkbox for each channel you wish to see. To suppress display of a channel, untick the checkbox.
After marking all desired customizations, click Submit.
Of course, for a quicker change to a single channel, you can simply use the standard buttons to minimize or close that individual channel.