I think I know what Matt's trying to say - and I wouldn't discredit him too much. After all, God did talk to His people through dreams very often in the Bible. I don't, by any stretch, think all my dreams are from God, but I think Matt is just saying if you remember a dream, assess it and see if you think there is a message there.
I had one dream after moving into an apartment with an orange stain on the bathroom floor that's supposedly going to be replaced. The second night I slept in the apartment, I dreamt that someone was murdered in the unit and that's why the orange stain is there
- now I don't think that dream came from God...I think that dream came from a mystery I has just been reading! So one needs to use common sense, too.