I keep reading the title as Reptilia(n) public diary
As you are not the only one to say this , please tell me what this reptilian thing is? I have a pleasure to not know anything at all what you are talking about..
I suppose it is because the characters resemble the word "reptilian", those lizard-like things...
My guess is that it is simply your name in the format R. Pietila. Probably *
Edited, just in case I nailed that...