Ghosting after a face to face comes across as the most unprofessional recruiting process. Took a day off and went there to meet with a bunch of people, got a positive repo and they told me that they will get back in a few days. All smiles and great handshakes and then nothing . When someone takes the pain of coming down to meet you in person and follow up multiple times show the basic manners to write back saying sorry' it's not you' or its on hold. In Tech world the chances of working with the same people again and again is very common. Being professional and respectful really Mirrors on how well the company is managed and how much u care about your people. I see the same comment on ghosting from others here so it looks like a common practice for them.