The more intersting question is why you think that's strange, given that you aren't using your own name. I use my name just about everywhere (that lets me) instead of a "screen name", and yet I'm the one who's made the odd choice. :)

That is simple. You arn't using your real name, but it looks like it is. It looks like a first name, initial, last name and that is why people find your capitalization odd. Yes you did indeed make the odd choice because you didn't pick a "screen name" AND you didn't use your real name, you've instead used some congolmeration of both. Don't take odd as a bad thing, simply means you didn't follow any previous convention and so people are going to occasionaly wonder why you would do something like that.

Why not ask chromatic why he does his name that way? He doesn't even have a good rationalization for his :), as he says when we were both asked that question at our book signings at the Portland Powells (which Chris Dawson recorded for a podcast).

Same simple answer, his doesn't look like a proper name that should be capitalized, yours does. BTW it is realy a sign of respect to capitalize a persons name, so asking why we can't is like asking "why can't we respect your proper name?" The answer appears to be "it isn't a proper name, it just looks like one."