Ideally written out in blood with a quill that will show how serious you are.
Assuming of course you use reddit for communication, for me it would be more about finding interesting pieces of information and seeing the analysis of other people, by the time I get to it most of the discussion has already occurred. For me personally Google Reader does not make more more productive, it is just another way to waste time.
I have exactly this problem and this is a good solution. So just to make it concrete if you want to block reddit as above I used the following..
Get Leechblock Add these into the specify site section +reddit.com/r reddit.com
So far this works well, I am not sure yet whether reddit puts anything in a different subdirectory.
2pm