Read-only archive. This is a static copy of the DonationCoder.com forum. Reading and searching work as before; logging in, posting and private messages do not.
Another way is to have SC automatically move old files into an archive directory every X days.
There is also a "Don't Auto Save Captures" option on the "Miscellaneous Tweaks" tab (though that will be bypassed if you try to copy the file path to the clipboard).