I have access to the "other site name" because some hotels or private access points block storiesonline.net. My mobile phone and Laptop are both set up to use that name.
A couple of days ago I was in a hotel and wanted to upvote a couple of the nominees. No can do - as far as the site was concerned I was not logged in to SOL.
No big deal, I'm home again now and did it from here.