I really do think a Username that was used for about a week and a half five years ago and has lain dormant ever since should be freed up. Maybe HQ could email dormant username owners and give them (say) thirty days to confirm they still want the name? Obviously some names should never be revived eg Mitmoo but I'm thinking the sort that posted once for innocuous advice and then drifted off, either nc-ing or to Another Site?
What do you reckon?