Thanks for everyone's thoughts....

I do accept that XP is a very, very crude gauge. It is probably futile to attempt to refine it but I'm going to try anyway.

Since nobody tells me that a second account will consume lots of server resources or confuse people, I've created social_mandog.

Posting Anonymously just seems too cumbersome and prone to error. (What if somebody posts anonymously, claims to be me and I don't notice?)

Also a second account allows me to (crudely) track my social contributions.