I don't let other people know when I laugh at their posts. I feel it lessens my worth as an interwebz funnyman. At most I will post a terse statement recognizing their cleverness.
If I may be candid, I also am deeply affected when people fail to realize my comic brilliance.
For the record, Sen Say, you are a very humorous gentleman, and if I were homosexually inclined, like, say, Dollarbill or Renton, I would happily toss your salad.