Just wondering, if you believe that Satoshi is still participating on Bitcointalk.org actively using a different pseudonym?
i dont think so, i say that because i see no point in trying to use a different account to use the forum he would remain anonymous even when using his original account and that hasnt been logged in for years.
I believe that Satoshi is somewhere active and watching the forum and bitcoin future like a parent, because he is the founder and he knows all the loop holes of bitcoins. he is not disclosing about his profile then there may be some reason behind it.