I don't think they'll respond back...seems like spam to me. If it was urgent then they'd have been back by now to interact.
This was my first thought when the thread opened, for a number of reasons.
Some spammers typically 'groom' the forum with benign comments for a small period of time and then they hit us with their advertisements when they think we won't notice.
It's a ridiculous business model that don't work very well on this forum because we usually stomp the spam (and spammers) pretty fast.
I'll leave it open though as it's a legitimate question but sadly I don't anticipate anyone returning for a response.