I guess that it's a habit to close the door when I leave. If there is no need to log out, then I won't. I've noticed myself logged on some 24 hours or so later and thought that might be an issue.
Re: external links:
I went to check the decalomaniacs news release note and went out to their site, eventually venturing deeper into ebay. Fearing that I was still logged on to A, I back-tracked about a dozen or so clicks to get back here. (Could've just hit the history button I suppose) I just thought that maybe it would be good to open up someone's (external) link in another window therefore not losing sight of Armorama.
No sweat if it's ok with you.