public service announcement: what you ought to know

Every now and again I get so enthused (read, lose so many hours of prime Doing Good time that I don't do any good) about a website I figure it'd be unfair not to mention it.  I have this funny feeling that everyone else has already known about this one for ages and ages, but I just found it and think it's just dandy.  Are you ready?  Are you finished with everything you need to do for the next decade?  Excellent.  Proceed HERE.