Welp, I finally account-failed on an IC comment. I knew that was going to happen eventually, the number of times in the past couple weeks that I've almost done it.
When you don't play more than one character at a time (if any at all) for several years, you lose the habit of checking who you're logged in as, apparently.
Which has to have been around for a while, because I remember using it before I quit RP, though I'm not sure when/why I switched from LJLogin unless LJ Juggler worked on DW before LJLogin did