Strange things

Strange dream
Am I guilty if I dreamed about a guy from the past? I had not even thought about him. Isn't it a very strange dream?

Strange coincidence
I had been having trouble with IDM (Internet Download Manager) for a couple of days. Then last night I asked a friend what application to use for downloading from Youtube, and he suggested IDM. I told him that mine could not download automatically. But he had to be off before giving me the solution.
A few minutes later, another friend sent me a message in facebook. And the subject of the message was IDM. I was surprised for a moment, how could this friend knew that I was having trouble with IDM. But when I read the message, he was just saying hello. Apparently, he replied to my message long ago, when I told him the link to download IDM.
Isn't it strange, considering this friend has not contacted me for months, and the message he replied was sent at least 2 years before?

~ Life is indeed a mystery ~