"DoDo" definitely comes from "DoD", the abbreviation for the US Department of Defense, which I found splashed all across news articles when the Iraq War started. But I don't remember what I originally meant with the added o -- DoD off, DoD zero, DoD should go the way of the dodo?...

I grew fond of it for added potential meanings.

There are obviously all the connotations to the dodo, the extinct flightless bird with the fatal lack of fear from predators. And then to one of my favourite childhood authors, self-made zoologist Gerald Durrell (who used the bird as symbol for his zoo, and wrote a fiction novel about the re-discovery of a thought-to-be-extinct dodo-like bird).

DoDo (or more correctly: Do'Do') would also denote the wheel arrangement of a locomotive with two bogies of four individually-driven axles each. There were very few such beasts, let me veer off-topic by showing two:

Russian Railways test loco EP200:

Well, with two-level bogies, maybe (Bo'Bo')'(Bo'Bo')' would be better. But no such uncertainty with the Union Pacific type DDA40X "Centennial" (series 6900):

How my on-line persona relates to my real self? Well, that's a thorny question. Some things I consider not for worldwide publicity, so there is difference I obviously won't write about.

I also agree with Jérôme above that one's personality will come across inadvertedly if posting in the same web forum for a sustained time -- one can't even keep up a troll long enough without the troll beginning to look like the real self.

I think the main difference between the meat and internet version I am willing to talk about comes from the latter having time to assemble sentences and text. I'm not sure what's the correct English word here -- maybe eruditeness?

_{*Lunatic*, n.
One whose delusions are out of fashion.}