Re: Senior - Junior
Unless you use a custom user title in your profile, the system labels you a 'junior member' until you have a requisite number of posts (not sure, maybe 100) at which point you'll be labelled a 'senior member'. As mentioned, and as you've done, this is an editable feature.
Guest would be someone not logged in, though I've never seen that label other than the 'number of users at present' field.
Welcome to the site, btw!!
1984 Fast/Nicholson 345 "FastForward"
".. there is much you could do at sea with common sense.. and very little you could do without it.."
Capt G E Ericson (from "The Cruel Sea" by Nicholas Monsarrat)