I have been rolling as a guest for over 1/2 a year now on my other site I always use my characters name, If you want I can add my name as ScawireMantis, or just Mantis, if there are no other Mantis's rolling you will only get my rolls, If there is other mantis's I'll change the name I use to ScawireMantis, since you can still search to find all my rolls just by then "character name" I've used, I do believe.
EDIT I just did the search and it seems the last 4 are my rolls but the 5th one is someone else so maybe I should use ScawireManits that way the only rolls you will get via search is my rolls.