I think you are both having an odd argument.
Actually, I think this is a clear use of steganography. The obvious implication is that ikegami must be part of the Illuminati faction infiltrating PerlMonks. Given how frequently he posts he may be in charge of intelligence and transmitting orders to the rest of the conspiracy members. And the use of silent edits may be an attempt to obfuscate the use of steganography! It's really quite brilliant! :-)
(And for the record I am of course being facetious.)