I actually do both. I use a paper journal for more personal thoughts, a separate travel journal for when I'm on a bike tour and my blog for more public thoughts, rants and other weird things. There are benefits to each and the technology can be good for presenting your ideas out to others to see. The question is what the goal of the journal is.
If it's just for self-exploration or "exploration"?
Side question: wouldn't this be more apropos for Foo?