The Start - Blogspot as diary

From time to time, I have some cool ideas that fly through my mind.
Problem is they leave without a trace.

I wanna group and categorize these "thoughts"
was looking for a free diary software that I can download and install
but web diary seems to be more "portable" and "safer" (what if your hardrive is dead)
Out of all the blog providers, Google is least likely to shut down

So here I'm , I'll start building my "Keith Corner" and verify "Blogspot"