Messenger

I thought of you today, out of the blue.
I went to your wall and realised there are others who thought of you too, and they chose to do so by leaving a message.
I did not leave a message, because I never did when you were still alive.
I did not leave a message, because I'm sure you won't be able to read them anyway.
If there is indeed a messenger to convey my message to you, perhaps I won't know what to say as well, sadly.
We were never close, but I still thought of you today.
What does it show?