Richie has of course sang Livin' On A Prayer with Jon when they do it acoustic and on his solo tours but like Richie said, and to the best of my knowledge too, they haven't done that as Bon Jovi.

Like I said though seeing as this person registered today obviously it does seem suspicious, possibly aimed at Keba after how she specifically said she hated when people referred to the band as Jon or vice versa. I'm not saying it definitely is someone we know, but it is a possibility.