To be honest, I never paid attention to that. I'll do from now on. I find dreams fascinating, but I also am pretty good in finding out why I dream about certain things. It's like a dedective story trying to find out why & what. Most of the time it's my brain processing/trying to make sense of things that happened to me earlier.
What amazes me most is how long I can remember certain dreams, and how places & people (fictional ones) return over the years, sometimes after a very long time.
Not everything makes sense though. I often dream about forgetting where I parked my car - last night was no different, and the setup for me jogging - even though that never happened to me, nor am I worried I ever will.
It's just that something as rational/practical as thinking "ooh, I have to post on Neurotalk about this" was utterly funny to me, especially as I did just that.