Q:

Is there any change in reputation penalty for downvoting? 

Possible Duplicate:
Should downvotes on questions be “free”?  

I just downvoted a question on Stack Overflow.  I don't do this very often so I wonder if there was any change in downvoting mechanism because I didn't receive -1 reputation penalty.  

A:

Down-votes on questions are now "free", i.e. they don't cost 1 reputation from you any longer.  Down-votes on answers still cost the same as before.  See Should downvotes on questions be "free"?  for the discussion.