See, you don't really have to keep a journal. The theory behind this is that people will be encouraged to remember their dreams without having to write them down, thereby increasing their recall. I don't know how many ppl read the dream journals. Fewer of them make comments. So, if you spoke to someone, you'd know you were getting a reaction of some sort which may make the experience of recalling dreams less pointless at times. Also, your partner could help you look for possible dream-signs that you may not pick up on.

That's just my take on it.

-Amé